Spatial frequency adaptation modulates population receptive field sizes.

ABSTRACT: The spatial tuning of neuronal populations in the early visual cortical regions is related to the spatial frequency (SF) selectivity of neurons. However, there has been no direct investigation into how this relationship is reflected in population receptive field (pRF) sizes despite the common application of pRF mapping in visual neuroscience. We hypothesised that adaptation to high/low SF would decrease the sensitivity of neurons with respectively small/large receptive field sizes, resulting in a change in pRF sizes as measured by functional magnetic resonance imaging (fMRI). To test this hypothesis, we first quantified the SF aftereffect using a psychophysical paradigm where human observers made SF judgments following adaptation to high/low SF noise patterns. We then incorporated the same

SUBMITTER: Altan E 

PROVIDER: S-EPMC12470847 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature