Journal articles: 'Psychophysical Investigation'

1

Seaber, Judy. "Psychophysical Investigation of Binocular Vision." American Orthoptic Journal 39, no. 1 (January 1989): 62–73. http://dx.doi.org/10.1080/0065955x.1989.11981936.

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Pinna, Baingio. "What Comes Before Psychophysics? The Problem of 'What We Perceive' and the Phenomenological Exploration of New Effects." Seeing and Perceiving 23, no. 5 (2010): 463–81. http://dx.doi.org/10.1163/187847510x541144.

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AbstractThe psychophysical methods were developed by Fechner to find out the perceptual threshold of a stimulus, that is, the weakest stimulus that could be perceived. In spite of the strong efficiency in measuring thresholds, psychophysics does not help to define the multiplicity and complexity of possible percepts emerging from the same stimulus conditions, and accordingly, of what we perceive. In order to define what we perceive it is also necessary to define what we can perceive within the multiplicity of possible visual outcomes and how they are reciprocally organized. Usually the main experimental task is aimed at focusing on the specific attribute to be measured: what comes before psychophysics, i.e., the phenomenological exploration, is typically not fully investigated either epistemologically or phenomenally, even if it assumes a basic role in the process of scientific discovery. In this work, the importance of the traditional approach is not denied. Our main purpose is to place the two approaches side by side so that they complement each other: the phenomenological exploration complements the quantitative psychophysical measurement of the qualities that emerge through the preliminary exploration. To demonstrate the basic role played by the phenomenological exploration in complementing the psychophysical investigation we introduce three critical visual conditions, called visual gradient of perceptibility, perceptible invisibility and visual levels of perceptibility. Through these conditions several new illusions are studied and some phenomenological rules are suggested.

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Graaf, Cees De, and Jan E. R. Frijters. "A psychophysical investigation of Beidler's mixture equation." Chemical Senses 11, no. 3 (1986): 295–314. http://dx.doi.org/10.1093/chemse/11.3.295.

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4

Kumar, T., and D. A. Glaser. "Illusory motion in Enigma: A psychophysical investigation." Proceedings of the National Academy of Sciences 103, no. 6 (January 30, 2006): 1947–52. http://dx.doi.org/10.1073/pnas.0510236103.

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Spence, Charles, Deborah E. Bentley, Nicola Phillips, Francis P. McGlone, and Anthony K. P. Jones. "Selective attention to pain: a psychophysical investigation." Experimental Brain Research 145, no. 3 (June 14, 2002): 395–402. http://dx.doi.org/10.1007/s00221-002-1133-6.

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Hirahara, Tatsuya, and Kazuo Ueda. "Investigation of headphones suitable for psychophysical experiments." Journal of the Acoustical Society of America 87, S1 (May 1990): S142. http://dx.doi.org/10.1121/1.2027992.

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Keast, R. S. J. "A Psychophysical Investigation of Binary Bitter-compound Interactions." Chemical Senses 28, no. 4 (May 1, 2003): 301–13. http://dx.doi.org/10.1093/chemse/28.4.301.

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8

Grunfeld, E. A., A. B. Morland, A. M. Bronstein, and M. A. Gresty. "Adaptation to oscillopsia: A psychophysical and questionnaire investigation." Brain 123, no. 2 (February 1, 2000): 277–90. http://dx.doi.org/10.1093/brain/123.2.277.

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9

Balkwill, Laura-Lee, and William Forde Thompson. "A Cross-Cultural Investigation of the Perception of Emotion in Music: Psychophysical and Cultural Cues." Music Perception 17, no. 1 (1999): 43–64. http://dx.doi.org/10.2307/40285811.

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Studies of the link between music and emotion have primarily focused on listeners' sensitivity to emotion in the music of their own culture. This sensitivity may reflect listeners' enculturation to the conventions of their culture's tonal system. However, it may also reflect responses to psychophysical dimensions of sound that are independent of musical experience. A model of listeners' perception of emotion in music is proposed in which emotion in music is communicated through a combination of universal and cultural cues. Listeners may rely on either of these cues, or both, to arrive at an understanding of musically expressed emotion. The current study addressed the hypotheses derived from this model using a cross-cultural approach. The following questions were investigated: Can people identify the intended emotion in music from an unfamiliar tonal system? If they can, is their sensitivity to intended emotions associated with perceived changes in psychophysical dimensions of music? Thirty Western listeners rated the degree of joy, sadness, anger, and peace in 12 Hindustani raga excerpts (field recordings obtained in North India). In accordance with the raga-rasa system, each excerpt was intended to convey one of the four moods or "rasas" that corresponded to the four emotions rated by listeners. Listeners also provided ratings of four psychophysical variables: tempo, rhythmic complexity, melodic complexity, and pitch range. Listeners were sensitive to the intended emotion in ragas when that emotion was joy, sadness, or anger. Judgments of emotion were significantly related to judgments of psychophysical dimensions, and, in some cases, to instrument timbre. The findings suggest that listeners are sensitive to musically expressed emotion in an unfamiliar tonal system, and that this sensitivity is facilitated by psychophysical cues.

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Jansen, Yvonne, and Kasper Hornbaek. "A Psychophysical Investigation of Size as a Physical Variable." IEEE Transactions on Visualization and Computer Graphics 22, no. 1 (January 31, 2016): 479–88. http://dx.doi.org/10.1109/tvcg.2015.2467951.

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Spry, Paul G. D., Chris A. Johnson, Steven L. Mansberger, and George A. Cioffi. "Psychophysical Investigation of Ganglion Cell Loss in Early Glaucoma." Journal of Glaucoma 14, no. 1 (February 2005): 11–19. http://dx.doi.org/10.1097/01.ijg.0000145813.46848.b8.

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Henderer, J. D. "Psychophysical Investigation of Ganglion Cell Loss in Early Glaucoma." Yearbook of Ophthalmology 2006 (January 2006): 68–69. http://dx.doi.org/10.1016/s0084-392x(08)70263-6.

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13

Leknes, Siri, Jonathan C. W. Brooks, Katja Wiech, and Irene Tracey. "Pain relief as an opponent process: a psychophysical investigation." European Journal of Neuroscience 28, no. 4 (August 2008): 794–801. http://dx.doi.org/10.1111/j.1460-9568.2008.06380.x.

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Mikhailova, E., and T. Vladimirova. "Emotion recognition in depressive patients: Psychophysical and EVPs-investigation." Electroencephalography and Clinical Neurophysiology 87, no. 2 (August 1993): S55. http://dx.doi.org/10.1016/0013-4694(93)91090-n.

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15

Vera-Diaz, Fuensanta A., Paul V. McGraw, Niall C. Strang, and David Whitaker. "A Psychophysical Investigation of Ocular Expansion in Human Eyes." Investigative Opthalmology & Visual Science 46, no. 2 (February 1, 2005): 758. http://dx.doi.org/10.1167/iovs.04-0127.

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Baldwin, Alex S., and Robert F. Hess. "AB071. Psychophysical investigation of dichoptic blur suppression in human vision." Annals of Eye Science 3 (March 2018): AB071. http://dx.doi.org/10.21037/aes.2018.ab071.

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17

Allen, E., S. Triantaphillidou, and R. E. Jacobson. "Image Quality Comparison Between JPEG and JPEG2000. I. Psychophysical Investigation." Journal of Imaging Science and Technology 51, no. 3 (2007): 248. http://dx.doi.org/10.2352/j.imagingsci.technol.(2007)51:3(248).

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18

Allen, H. A., and G. W. Humphreys. "A psychophysical investigation into the preview benefit in visual search." Vision Research 47, no. 6 (March 2007): 735–45. http://dx.doi.org/10.1016/j.visres.2006.11.007.

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19

Mohamad Hanif, Noor Hazrin Hany, P. H. Chappell, N. M. White, A. W. Cranny, and Zhongmin Jin. "A psychophysical investigation on vibrotactile sensing for transradial prosthesis users." Cogent Engineering 5, no. 1 (January 1, 2018): 1539943. http://dx.doi.org/10.1080/23311916.2018.1539943.

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Love, Scott A., Karin Petrini, Adam Cheng, and Frank E. Pollick. "A Psychophysical Investigation of Differences between Synchrony and Temporal Order Judgments." PLoS ONE 8, no. 1 (January 21, 2013): e54798. http://dx.doi.org/10.1371/journal.pone.0054798.

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Yue, X., M. C. Mangini, and I. Biederman. "A psychophysical investigation of the other race effect in face recognition." Journal of Vision 3, no. 9 (March 18, 2010): 836. http://dx.doi.org/10.1167/3.9.836.

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22

Park, Hyung Jun. "Psychophysical investigation of the effect of coring on perceived toner scatter." Journal of Electronic Imaging 19, no. 1 (January 1, 2010): 011008. http://dx.doi.org/10.1117/1.3267102.

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23

Humphrey, Bonnie, William S. Helton, Carol Bedoya, Yinnon Dolev, and Ximena J. Nelson. "Psychophysical investigation of vigilance decrement in jumping spiders: overstimulation or understimulation?" Animal Cognition 21, no. 6 (August 30, 2018): 787–94. http://dx.doi.org/10.1007/s10071-018-1210-2.

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24

Essick, G. K., and B. L. Whitsel. "Factors influencing cutaneous directional sensitivity: A correlative psychophysical and neurophysiological investigation." Brain Research Reviews 10, no. 3 (December 1985): 213–30. http://dx.doi.org/10.1016/0165-0173(85)90025-6.

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25

Hattenberger, Timothy J., Mark D. Fairchild, Garrett M. Johnson, and Carl Salvaggio. "A psychophysical investigation of global illumination algorithms used in augmented reality." ACM Transactions on Applied Perception 6, no. 1 (February 2009): 1–22. http://dx.doi.org/10.1145/1462055.1462057.

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26

Lee, Kwan S., and Hee S. Park. "Assessment of Validity of Applying the Revised NIOSH Weight Limit of Lifts to Korean Young, Male Population: Psychophysical Approach." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 39, no. 10 (October 1995): 714–17. http://dx.doi.org/10.1177/154193129503901037.

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This investigation was aimed to study using the psychophysical method if the revised weight limit of lifts recommended by the U.S. National Institute for Occupational Safety and Health (NIOSH) can be used as a limit for the Korean workers. College students and field workers, all of whom were young males, participated in the experiment. The psychophysical experiment and the validation experiment were performed in sagittal plane where lifting frequency and lifting height varied. Main results showed the load constant obtained in this study was about the same as the one recommended in the NIOSH equation, which means that young, healthy, male Korean population can be well protected by the NIOSH equation.

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27

Shirakura, Masayuki, Tetsuaki Kawase, Akitake Kanno, Jun Ohta, Nobukazu Nakasato, Ryuta Kawashima, and Yukio Katori. "Different contra-sound effects between noise and music stimuli seen in N1m and psychophysical responses." PLOS ONE 16, no. 12 (December 20, 2021): e0261637. http://dx.doi.org/10.1371/journal.pone.0261637.

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Auditory-evoked responses can be affected by the sound presented to the contralateral ear. The different contra-sound effects between noise and music stimuli on N1m responses of auditory-evoked fields and those on psychophysical response were examined in 12 and 15 subjects, respectively. In the magnetoencephalographic study, the stimulus to elicit the N1m response was a tone burst of 500 ms duration at a frequency of 250 Hz, presented at a level of 70 dB, and white noise filtered with high-pass filter at 2000 Hz and music stimuli filtered with high-pass filter at 2000 Hz were used as contralateral noise. The contralateral stimuli (noise or music) were presented in 10 dB steps from 80 dB to 30 dB. Subjects were instructed to focus their attention to the left ear and to press the response button each time they heard burst stimuli presented to the left ear. In the psychophysical study, the effects of contralateral sound presentation on the response time for detection of the probe sound of a 250 Hz tone burst presented at a level of 70 dB were examined for the same contra-noise and contra-music used in the magnetoencephalographic study. The amplitude reduction and latency delay of N1m caused by contra-music stimuli were significantly larger than those by contra-noise stimuli in bilateral hemisphere, even for low level of contra-music near the psychophysical threshold. Moreover, this larger suppressive effect induced by contra-music effects was also observed psychophysically; i.e., the change in response time for detection of the probe sound was significantly longer by adding contralateral music stimuli than by adding contra-noise stimuli. Regarding differences in effect between contra-music and contra-noise, differences in the degree of saliency may be responsible for their different abilities to disturb auditory attention to the probe sound, but further investigation is required to confirm this hypothesis.

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Elfeituri, Farag E., and Salem M. Taboun. "An Evaluation of the NIOSH Lifting Equation: A Psychophysical and Biomechanical Investigation." International Journal of Occupational Safety and Ergonomics 8, no. 2 (January 2002): 243–58. http://dx.doi.org/10.1080/10803548.2002.11076527.

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29

Tollin, Daniel J., and Tom C. T. Yin. "Psychophysical Investigation of an Auditory Spatial Illusion in Cats: The Precedence Effect." Journal of Neurophysiology 90, no. 4 (October 2003): 2149–62. http://dx.doi.org/10.1152/jn.00381.2003.

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The precedence effect (PE) describes several spatial perceptual phenomena that occur when similar sounds are presented from two different locations and separated by a delay. The mechanisms that produce the effect are thought to be responsible for the ability to localize sounds in reverberant environments. Although the physiological bases for the PE have been studied, little is known about how these sounds are localized by species other than humans. Here we used the search coil technique to measure the eye positions of cats trained to saccade to the apparent locations of sounds. To study the PE, brief broadband stimuli were presented from two locations, with a delay between their onsets; the delayed sound meant to simulate a single reflection. Although the cats accurately localized single sources, the apparent locations of the paired sources depended on the delay. First, the cats exhibited summing localization, the perception of a “phantom” sound located between the sources, for delays < ±400 μs for sources positioned in azimuth along the horizontal plane, but not for sources positioned in elevation along the sagittal plane. Second, consistent with localization dominance, for delays from 400 μs to about 10 ms, the cats oriented toward the leading source location only, with little influence of the lagging source, both for horizontally and vertically placed sources. Finally, the echo threshold was reached for delays >10 ms, where the cats first began to orient to the lagging source on some trials. These data reveal that cats experience the PE phenomena similarly to humans.

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Grainger, Jonathan, and J. Kevin O'regan. "A psychophysical investigation of language priming effects in two english-french bwguals." European Journal of Cognitive Psychology 4, no. 4 (October 1992): 323–39. http://dx.doi.org/10.1080/09541449208406191.

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31

Nakayama, Koichi, Juan Liu, and Hiroshi Ando. "Psychophysical investigation of hardness perception for haptic device development towards Kansei engineering." International Journal of Biometrics 3, no. 4 (2011): 337. http://dx.doi.org/10.1504/ijbm.2011.042816.

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32

González-Gil, Diego, Ibrahim Dib-Zaitun, Javier Flores-Fraile, and Joaquín López-Marcos. "Active Tactile Sensibility in Implant Prosthesis vs. Complete Dentures: A Psychophysical Study." Journal of Clinical Medicine 11, no. 22 (November 18, 2022): 6819. http://dx.doi.org/10.3390/jcm11226819.

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Background and Objectives: Proprioceptive information from natural dentition and adjacent oral tissues enables correct masticatory function, avoiding damage to the teeth. Periodontium is the main source of this relevant information, and when a tooth is lost, all this proprioceptive sensibility relies on receptors from muscles, the mucous membrane or the temporomandibular joint, and this sensibility gets worse. Active tactile sensibility measures this proprioceptive capability in microns by psychophysical studies consisting of introducing thin metal foils between patients’ dental arches during chewing to see if they are able to notice them or not. Osseoperception is a complex phenomenon that seems to improve this sensibility in patients wearing dental implants. The objective of this investigation is to measure this sensibility in different prosthetic situations by performing a psychophysical investigation. Material and Methods: We divided 67 patients in three groups depending on their prosthetic situation and performed a psychophysical study by introducing aluminium foils of different thicknesses in order to establish an active tactile sensibility threshold in every group. We also measured variables such as prosthetic wearing time, age or gender to see how they may influence threshold values. We used Student’s t-test and Mann–Whitney U tests to analyse these results. Results: Active tactile sensibility threshold values in implants are lower than those from complete dentures but higher than values in natural dentition. However, values in implants are closer to natural dentition than complete denture values. Age, gender or prosthetic wearing time have no influence in active tactile sensibility thresholds. Conclusion: Active tactile sensibility threshold values depend on prosthetic rehabilitations and the mechanoreceptors involved in every situation. Implant prosthesis presents an increased active tactile sensibility thanks to osseoperception phenomenon.

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Frijters, Jan E. R., J. B. M. van der Klaauw, and Ben Kranen. "The use of molal concentrations in a psychophysical investigation of Beidler’s mixture equation." Chemical Senses 15, no. 6 (1990): 659–69. http://dx.doi.org/10.1093/chemse/15.6.659.

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34

Jin, Craig T., Nicolas Epain, and Mengyao Zhu. "Psychophysical investigation of binaural spatial-audio music perception with varying degrees of realism." Journal of the Acoustical Society of America 140, no. 4 (October 2016): 3278. http://dx.doi.org/10.1121/1.4970418.

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35

Lee, A. L. F., and H. Lu. "Adapting to imperceptible multidirectional motion yields perceptible aftereffects: A psychophysical and computational investigation." Journal of Vision 12, no. 9 (August 10, 2012): 936. http://dx.doi.org/10.1167/12.9.936.

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Muramatsu, Chisako, Qiang Li, Kenji Suzuki, Robert A. Schmidt, Junji Shiraishi, Gillian M. Newstead, and Kunio Doi. "Investigation of psychophysical measure for evaluation of similar images for mammographic masses: Preliminary results." Medical Physics 32, no. 7Part1 (June 20, 2005): 2295–304. http://dx.doi.org/10.1118/1.1944913.

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Higashino, Toshitaka, Yasushi Naruse, and Masato Soga. "Investigation of the Influence of Social Rank and Spatial Arrangement Using the Psychophysical Experiments." Procedia Computer Science 96 (2016): 1740–47. http://dx.doi.org/10.1016/j.procs.2016.08.222.

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38

Duffy, Valerie B., John E. Hayes, and Mastaneh Sharafi. "Interactions between retronasal olfaction and taste influence vegetable liking and consumption: A psychophysical investigation." Journal of Agriculture and Food Research 2 (December 2020): 100044. http://dx.doi.org/10.1016/j.jafr.2020.100044.

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39

Ryu, Jonghyun. "Psychophysical Model for Vibrotactile Rendering in Mobile Devices." Presence: Teleoperators and Virtual Environments 19, no. 4 (August 1, 2010): 364–87. http://dx.doi.org/10.1162/pres_a_00011.

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Vibrotactile rendering is one of the most popular means for improving the user interface of a mobile device, but the availability of related perceptual data that can aid vibrotactile effect design is not currently sufficient. The present paper reports data from a series of psychophysical studies designed to fill this gap. In Experiment I, we measured the absolute detection thresholds of sinusoidal vibrotactile stimuli transmitted to the hand through a mobile phone. Stimuli were generated by a mechanical shaker system that can produce vibrations over a broad frequency and amplitude range. The detection thresholds reported here are a new addition to the literature, and can serve as a baseline for vibrotactile stimulus design. In Experiment II, we estimated the perceived intensities of mobile device vibrations for various frequencies and amplitudes using the same shaker system. We also determined a form of parametric nonlinear function based on Stevens' power law and fit the function to the measured data. This psychophysical magnitude function, which maps vibration frequency and amplitude to a resulting perceived intensity, can be used to predict the perceived intensity of a mobile device vibration from its physical parameter values. In Experiment III, we measured another set of perceived intensities using two commercial miniature vibration actuators (vibration motor and voice-coil actuator) in place of the mechanical shaker. The purpose of this experiment was to evaluate the utility of the psychophysical magnitude function obtained in Experiment II, as vibrotactile stimuli produced by miniature actuators may have different physical characteristics, such as vibration direction and ground condition. Comparison of the results of Experiments II and III confirmed that the psychophysical magnitude function can reliably predict changing trends in the perceived intensity of mobile device vibration. We also discuss further research issues encountered during the investigation. The results presented in this paper may be instrumental in the design of effective vibrotactile actuators and perceptually-salient rendering algorithms for mobile devices.

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Nakamura, Shinji. "Effects of Stimulus Eccentricity on the Perception of Visually Induced Self-motion Facilitated by Simulated Viewpoint Jitter." Seeing and Perceiving 25, no. 6 (2012): 647–54. http://dx.doi.org/10.1163/18784763-00002398.

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The present investigation aimed to examine the effects of stimulus eccentricity in the facilitation of vection by a jittering visual inducer. A psychophysical experiment revealed that the central region of the visual field is more critical in facilitation by perspective viewpoint jitter than the peripheral area. The results suggest that the perceptual mechanism underlying the facilitation by jitter may be different from that responsible for generating standard vection from non-jittering visual motion, because the effects of stimulus eccentricity were quite different in these two situations.

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Komura, Hiraku, Toshiki Nakamura, and Masahiro Ohka. "Investigation of Tactile Illusion Based on Gestalt Theory." Philosophies 6, no. 3 (July 22, 2021): 60. http://dx.doi.org/10.3390/philosophies6030060.

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Time-evolving tactile sensations are important in communication between animals as well as humans. In recent years, this research area has been defined as “tactileology,” and various studies have been conducted. This study utilized the tactile Gestalt theory to investigate these sensations. Since humans recognize shapes with their visual sense and melodies with their auditory sense based on the Prägnanz principle in the Gestalt theory, this study assumed that a time-evolving texture sensation is induced by a tactile Gestalt. Therefore, the operation of such a tactile Gestalt was investigated. Two psychophysical experiments were conducted to clarify the operation of a tactile Gestalt using a tactile illusion phenomenon called the velvet hand illusion (VHI). It was confirmed that the VHI is induced in a tactile Gestalt when the laws of closure and common fate are satisfied. Furthermore, it was clarified that the tactile Gestalt could be formulated using the proposed factors, which included the laws of elasticity and translation, and it had the same properties as a visual Gestalt. For example, the strongest Gestalt factor had the highest priority among multiple competing factors.

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Gola, Marco, Monica Botta, Anna Lisa D’Aniello, and Stefano Capolongo. "Influence of Nature at the Time of the Pandemic: An Experience-Based Survey at the Time of SARS-CoV-2 to Demonstrate How Even a Short Break in Nature Can Reduce Stress for Healthcare Staff." HERD: Health Environments Research & Design Journal 14, no. 2 (February 18, 2021): 49–65. http://dx.doi.org/10.1177/1937586721991113.

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Aim: The current COVID-19 pandemic has been causing significant upheavals in the daily lives of citizens and consequently also their mood (stress, distraction, anxiety, etc.), especially during the lockdown phase. The aim of the investigation is to evaluate the benefits of 20–30 minutes in contact with nature. Background: The Scientific Community, also through the evidence-based design approach, has already demonstrated the importance of greenery and nature on the psychophysical well-being of people and, in a moment of emergency, contact with the nature can be therapeutic and quite influential on the mental health of staff subject to stress. Method: During the lockdown, an Italian multidisciplinary working group promoted an experience-based survey, based on the Profile of Mood States methodology, for measuring the psychophysical well-being of hospital staff. Results: The author collected 77 questionnaires. The benefits that users have obtained from the experience in nature have been investigated by comparing the type of stresses they were subjected to and highlighting various peculiarities in the data analysis associated with the type of green in which they carried out the survey, the healthcare areas in which they worked during the pandemic emergency, and the moment in which the survey was conducted. Conclusions: The study has highlighted that a short break in green spaces strongly influenced the mental and psychophysical well-being of hospital staff, emphasizing the importance of nearby green spaces in architectures for health. Even a brief break in nature can regenerate users, especially in times of a stressful health emergency.

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Villemure, Chantal, Spogmai Wassimi, Gary J. Bennett, Yoram Shir, and Catherine M. Bushnell. "Unpleasant odors increase pain processing in a patient with neuropathic pain: Psychophysical and fMRI investigation." Pain 120, no. 1-2 (January 2006): 213–20. http://dx.doi.org/10.1016/j.pain.2005.10.031.

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Wang, Jenhung, Shih-Chin Li, and Pei-Chun Lin. "A psychophysical and questionnaire investigation on the spatial disorientation triggered by cockpit layout and design." International Journal of Industrial Ergonomics 72 (July 2019): 347–53. http://dx.doi.org/10.1016/j.ergon.2019.06.008.

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Klonari, Despina, Konstantinos Pastiadis, Georgios Papadelis, and George Papanikolaou. "Loudness Assessment of Musical Tones Equalized in A-weighted Level." Archives of Acoustics 36, no. 2 (May 1, 2011): 239–50. http://dx.doi.org/10.2478/v10168-011-0019-7.

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AbstractThe present study was carried out to determine whether recorded musical tones played at various pitches on a clarinet, a flute, an oboe, and a trumpet are perceived as being equal in loudness when presented to listeners at the sameA-weighted level. This psychophysical investigation showed systematic effects of both instrument type and pitch that could be related to spectral properties of the sounds under consideration. Level adjustments that were needed to equalize loudness well exceeded typical values of JNDs for signal level, thus confirming the insufficiency ofA-weighting as a loudness predictor for musical sounds. Consequently, the use of elaborate computational prediction is stressed, in view of the necessity for thorough investigation of factors affecting the perception of loudness of musical sounds.

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Harris, Daniel, Donald Fucci, and Linda Petrosino. "Magnitude Estimation and Cross-Modal Matching of Lingual Vibrotactile and Auditory Sensation." Journal of Speech, Language, and Hearing Research 32, no. 3 (September 1989): 698–702. http://dx.doi.org/10.1044/jshr.3203.698.

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The present experiment was a preliminary attempt to use the psychophysical scaling methods of magnitude estimation and cross-modal matching to investigate suprathreshold judgments of lingual vibrotactile and auditory sensation magnitudes for 20 normal young adult subjects. A 250-Hz lingual vibrotactile stimulus and a 1000-Hz binaural auditory stimulus were employed. To obtain judgments for nonoral vibrotactile sensory magnitudes, the thenar eminence of the hand was also employed as a test site for 5 additional subjects. Eight stimulus intensities were presented during all experimental tasks. The results showed that the slopes of the log-log vibrotactile magnitude estimation functions decreased at higher stimulus intensity levels for both test sites. Auditory magnitude estimation functions were relatively constant throughout the stimulus range. Cross-modal matching functions for the two stimuli generally agreed with functions predicted from the magnitude estimation data, except when subjects adjusted vibration on the tongue to match auditory stimulus intensities. The results suggested that the methods of magnitude estimation and cross-modal matching may be useful for studying sensory processing in the speech production system. However, systematic investigation of response biases associated with vibrotactile-auditory psychophysical scaling tasks appears to be a prerequisite.

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Jacobsen, M., A. Fritz, R. Dhingra, and R. Postle. "A Psychophysical Evaluation of the Tactile Qualities of Hand Knitting Yarns." Textile Research Journal 62, no. 10 (October 1992): 557–66. http://dx.doi.org/10.1177/004051759206201001.

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A technique based on the semantic differential method of attitude measurement was developed for use with consumers. Using semantic grids derived from consumer preferences, some twenty bipolar attributes pertaining to tactile qualities were evaluated for hand knitting yarns in the ball and fabric states. The yarns and the resultant fabrics used in the evaluations represent six styles of commercially marketed hand knitting yarns. Using consumer concepts of the “ideal” yarn or fabric, commercially available products may be assessed for their worth and market potential. Results indicate a significant consumer preference for yarns containing a small percentage of specialty hair fiber, pure wool, or wool rich blends. Furthermore, responses to yarns in the ball state and the fabric state differ markedly in some instances, indicating that at the point of purchase, initial impressions may prejudice purchasing decisions. From objective measures of yarn and fabric compressional properties and yarn bending properties correlated with the subjective data, a complete picture of the samples under investigation emerges. The results indicate that certain of the bipolar attributes correlate significantly with the objective measurements. This indicates that the human hand is able to detect small mechanical deformations in yams and fabrics and to label these with language constructs, thereby recognizably and meaningfully identifying characteristics of fabric hand.

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48

Leknes, S., K. Wiech, J. Brooks, and I. Tracey. "290 IS THERE MORE TO PAIN RELIEF THAN A REDUCTION IN PAIN INTENSITY? A PSYCHOPHYSICAL INVESTIGATION." European Journal of Pain 10, S1 (September 2006): S78. http://dx.doi.org/10.1016/s1090-3801(06)60293-0.

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Susilo, Tirta, Elinor McKone, and Mark Edwards. "What shape are the neural response functions underlying opponent coding in face space? A psychophysical investigation." Vision Research 50, no. 3 (February 2010): 300–314. http://dx.doi.org/10.1016/j.visres.2009.11.016.

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50

Roudnitzky, Natacha, Johannes H. F. Bult, Rene A. de Wijk, Jens Reden, Benno Schuster, and Thomas Hummel. "Investigation of interactions between texture and ortho- and retronasal olfactory stimuli using psychophysical and electrophysiological approaches." Behavioural Brain Research 216, no. 1 (January 2011): 109–15. http://dx.doi.org/10.1016/j.bbr.2010.07.019.

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Journal articles on the topic 'Psychophysical Investigation'

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