WebApr 15, 2009 · Grating orientation thresholds have been used extensively to study sensory function following nerve injury and sensory impairment (Van Boven and Johnson, 1994; ... The dome gratings and point localization grid used to test the subjects had footprints that fell entirely within the previously denervated skin region. Therefore, it was unlikely ... WebGrating orientation discrimination is employed widely to test tactile spatial acuity. We used functional magnetic resonance imaging (fMRI) to investigate the neural circuitry underlying performance of this task. Two studies were carried out.
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Several highly regarded tactile tests have been developed as rigorous replacements to the 2PD test. In psychophysics research laboratories, a favored test of tactile spatial acuity has for many years been the grating orientation task (GOT). In the GOT, the participant attempts to discern the orientation of parallel grooves pressed either along or across the fingertip. The GOT threshold is the groove width at which the participant performs with some specified level of accuracy (e.g., 7… WebSep 1, 2024 · Grating orientation task Another task to measure a subject’s tactile spatial acuity is the grating orientation task. This task was developed and validated by Van Boven and colleagues (1994b) to provide clinicians and researchers with an alternative means to assess spatial acuity that overcame the limitations of the two-point discrimination task. how to link quickbooks to outlook email
Braille in the Sighted: Teaching Tactile Reading to Sighted Adults ...
WebThe Wilcoxon signed-rank test was used to compare the mean grating acuity of incorrectly identified stimuli as a function of the orientation of the stimulus. Results Visual, Grating, and Vernier Acuities ... The pattern of orientation-dependent defocus depends on the type (hyperopic or myopic) of astigmatism and orientation of astigmatism ... WebApr 25, 2005 · Grating orientation discrimination is employed widely to test tactile spatial acuity. We used functional magnetic resonance imaging (fMRI) to investigate the neural circuitry underlying performance of this task. Two studies were carried out. WebWhat are the 4 parameters that specify a specific sine wave grating? -spatial frequency-refers to the number of light and dark regions imaged within a given distance on the retina. -contrast-related to the intensity difference between the light and dark bars of the grating. -orientation-refers to the axis of the grating's bars. how to link ration card with bank account