Category Learning Stretches Neural Representations in Visual Cortex

Category Learning Stretches Neural Representations in Visual Cortex.

We review recent work that shows how learning to categorize objects changes how those objects are represented in the mind and the brain. After category learning, visual perception of objects is enhanced along perceptual dimensions that were relevant to the learned categories, an effect we call dimensional modulation (DM). DM stretches object representations along category-relevant dimensions an...

Stretches Neural Representations in Visual Cortex

Category learning biases sensory representations in human visual cortex

Word Count: 234 Article Word Count (inc. References & Fig Captions): 5011 Reference Count: 29 Figure Count: 6 *Correspondence: Edward Ester Department of Psychology and FAU Brain Institute Florida Atlantic University 777 Glades Rd. Boca Raton, FL. 33431 [email protected] Acknowledgments: Funding provided by NIH R01 EY025872 (J.T.S.) and a James S. McDonnell Foundation award (J.T.S.). E.F.E., conce...

Short-latency category specific neural responses to human faces in macaque inferotemporal cortex

In this article I would present evidence to show that timing of the flow of neural signals within the ventral visual stream is a crucial part of the neural code for categorization of faces. We recorded the activity of 554 inferotemporal neurons from two macaque monkeys performing a fixation task. More than 1000 object images including human and non-primate animal faces were presented up to 10 t...

Feedback from human posterior parietal cortex enables visuospatial category representations as early as primary visual cortex

Introduction Categorization is a fundamental cognitive process, whereby the brain assigns meaning to sensory stimuli. Previous studies have found category representations in prefrontal cortex and posterior parietal cortex (PPC). However, these higher-order areas lack the fine-scale spatial representations of early sensory areas, and it remains unclear what mechanisms enable flexible categorizat...