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- Title
Spatial frequency components influence cell activity in the inferotemporal cortex.
- Authors
BERMUDEZ, MARIA A.; VICENTE, ANA F.; ROMERO, MARIA C.; PEREZ, ROGELIO; GONZALEZ, FRANCISCO
- Abstract
We studied the correlation between the spatial frequency of complex stimuli and neuronal activity in the monkey inferotemporal (IT) cortex while performing a task that required visual recognition. Single-cell activity was recorded from the right IT cortex. The frequency components of the images used as stimuli were analyzed by using a fast Fourier transform, and a modulus was obtained for 40 spatial frequency ranges from 0.3 to 11.1 cycles/deg. We recorded 82 cells showing statistically significant responses (analysis of variance, P <0.05) to at least one of the images used as a stimulus. Seventy-eight percent of these cells (n = 64) showed significant responses to at least three images, and in two thirds of them (n = 42), we found a statistically significant correlation (P <0.05) between cell response and the modulus amplitude of at least one frequency range present in the images. Our results suggest that information about spatial frequency of the visual images is present in the IT cortex.
- Subjects
MONKEYS; FOURIER transform optics; SPATIAL ability; NEUROPLASTICITY; VISIONS
- Publication
Visual Neuroscience, 2009, Vol 26, Issue 4, p421
- ISSN
0952-5238
- Publication type
Article
- DOI
10.1017/S0952523809990198