Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Psychophysical methods"”.
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An investigation of team lifting using psychophysical methods
… affect the results of team lifting tasks. The psychophysical methodology has been used for almost 30 years in trying to determine the maximum acceptable weight of lift for industrial workers. Though two previous studies of team lifting used the psychophysical approach, no effort was made to …
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Factors affecting color appearance and measurement by psychophysical methods
Chromatic adaptation has been studied by applying methods of direct scaling to color appearances of stimuli perceived under different conditions of adaptation. This study differs from previous work in a number of ways. The color appearances of surface color stimuli were scaled by both magnitude …
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An Evaluation of the Effects of Selected Psychophysical Methods and Judgmental Procedures Upon Comfortable Loudness Judgments of Connected Speech
Made available in DSpace on 2014-12-10T17:03:09Z (GMT). No. of bitstreams: 1 6503628.pdf: 3102134 bytes, checksum: cecc9e40a0aedf8502455ddc943ec62a (MD5) Previous issue date: 1964
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Investigation of physical and psychophysical methods for the attenuation measurement of circumaural hearing protectors with implication for field use
… at threshold (REAT) method, termed 1I3-REAT, a psychophysical procedure (ANSI S3.19-1984). One alternative deviated from the standardized procedure primarily through utilizing a pure-tone audiometer coupled to an amplifier and loudspeaker for the sound field presentation of pure tones (Pr …
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The interplay between shape and colour: an experimental inquiry
… of the feasibility of the phenomenological methods, complementary to psychophysical methods in the scientific analysis of visual perception.
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The perceived timing of events across different sensory modalities. A psychophysical investigation of multisensory time perception in humans.
The experiments reported within this thesis use psychophysical techniques to examine the factors which determine perceived multisensory timing in humans. Chapters 1 and 2 describe anatomical and psychophysical features of temporal processing, respectively, whilst Chapter 3 introduces the reader to …
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The effects of noise exposure and genetic background on auditory-evoked behaviors in larval zebrafish
… presented with a loud acoustic stimulus. I used psychophysical methods to measure auditory sensitivity and perception by observing changes in this behavioral response. In chapter 2, I describe a novel paradigm using prepulse inhibition as a tool to measure auditory sensitivity in larval …
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Information theoretic design of breast sonography
… that measured from trained human observers using psychophysical methods. The iterative Wiener filter was found to match the performance of the Wiener filter for low-contrast lesions and increase the performance for high-contrast tasks. This filter offers greater diagnostic performance for …
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A NEW APPROACH TO ALGORITHM-ORIENTED VISUAL PSYCHOPHYSICS
… a pair of retinal images. Some approaches use psychophysical methods, which allow for controlled sensory presentation and perceptual measurement. Theory holds that through principled application of psychophysics and perceptual modelling, the mechanisms of the visual system can be uncovered. The …
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Myopia: structural and functional correlates
… visual field sensitivity testing, and the use of psychophysical methods to determine ganglion cell density. The results show that many quadrantic structural and functional variations exist. In general, the data could not demonstrate a significant correlation between visual function and associated …
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Low- and high-level motion deficits in amblyopia: studies of maximum motion displacement
… anisometropic and strabismic amblyopia using psychophysical methods; and 2) to investigate the relationship between psychophysical Dmax deficits and dysfunction in motion-sensitive extrastriate cortex of the M pathway using functional MRI techniques. The psychophysical results showed that Dmax …
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Aniseikonia: A Potential Barrier To Neural Plasticity
… for anisometropic amblyopia in children. Methods: A retrospective chart review of children that failed preschool vision screening investigated causes of visual impairment and treatment outcomes of children seen in hospital eye services (HES). A cross-sectional study used clinical and …
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Color : functional organization and behavior
… hardware of the brain. This thesis employs psychophysical methods and functional imaging to tackle questions about human color vision at all three levels: what it is used for, how we solve the classic problem of color constancy, and how our color processing machinery is functionally …
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Webový nástroj pro párový test obrázků
Cílem této bakalářské práce je vytvoření internetové aplikace pro experimentální vyhodnocení multimediálních dat (obrazu a videa) pomocí párového testování. V práci jsou popsány další psychofyzikální metody pro experimenty, problémy zobrazování multimediálních dat v prohlížečích, parametry testů …
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Neural and Psychological Mechanisms of Oral Sensation
… of fungiform papillae on the tongue. Using psychophysical methods and the taster status phenotype, this thesis examined if different regions of the tongue and mouth experienced different chemostimulant intensity and if dynamic touch changed the intensity perception of chemostimulants in …
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Vibration intensity difference thresholds
… and contact conditions.<br/>In this thesis, psychophysical methods were employed to determine the difference thresholds with various input conditions (whole-body vibration, foot-transmitted vibration, grasping a vibrating handle, and localised excitation of the hand and the forearm). Five …