Neurophysiological evaluation of the differential response model for orientation and spatial-frequency discrimination
Recent models have attempted to reconcile low psychophysical orientation and spatial-frequency discrimination thresholds with relatively broad orientation and spatial-frequency tuning of cortical neurons. These models have relied on the ability of the neurons to convert small stimulus changes into r...
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| Veröffentlicht in: | Journal of the Optical Society of America. A, Optics and image science Optics and image science, 1985-09, Vol.2 (9), p.1607 |
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| container_issue | 9 |
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| container_title | Journal of the Optical Society of America. A, Optics and image science |
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| creator | Bradley, A Skottun, B C Ohzawa, I Sclar, G Freeman, R D |
| description | Recent models have attempted to reconcile low psychophysical orientation and spatial-frequency discrimination thresholds with relatively broad orientation and spatial-frequency tuning of cortical neurons. These models have relied on the ability of the neurons to convert small stimulus changes into reliable response changes. We have examined this ability in a sample of neurons from the cat's striate cortex. We present here data from two cells that reliably signaled the smallest orientation and spatial-frequency differences. Using receiver operating characteristic analysis, we find that these cells could reliably signal orientation differences of 1.84 deg and spatial-frequency differences of 0.073 octave. We compare these single-cell results to cat and human behavioral discrimination thresholds. |
| doi_str_mv | 10.1364/JOSAA.2.001607 |
| format | Article |
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| identifier | ISSN: 0740-3232 |
| ispartof | Journal of the Optical Society of America. A, Optics and image science, 1985-09, Vol.2 (9), p.1607 |
| issn | 0740-3232 1084-7529 1520-8532 |
| language | eng |
| recordid | cdi_crossref_primary_10_1364_JOSAA_2_001607 |
| source | MEDLINE; Optica Publishing Group Journals |
| subjects | Animals Cats Discrimination Learning - physiology Evoked Potentials, Visual Motion Perception - physiology Neurons - physiology Orientation - physiology Pattern Recognition, Visual - physiology Psychophysics Sensory Thresholds Space Perception - physiology Visual Cortex - physiology Visual Perception - physiology |
| title | Neurophysiological evaluation of the differential response model for orientation and spatial-frequency discrimination |
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