Prefrontal Cortex Activity during Flexible Categorization
Author(s)Roy, Jefferson; Riesenhuber, Maximilian; Poggio, Tomaso A.; Miller, Earl K.
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Items are categorized differently depending on the behavioral context. For instance, a lion can be categorized as an African animal or a type of cat. We recorded lateral prefrontal cortex (PFC) neural activity while monkeys switched between categorizing the same image set along two different category schemes with orthogonal boundaries. We found that each category scheme was largely represented by independent PFC neuronal populations and that activity reflecting a category distinction was weaker, but not absent, when that category was irrelevant. We suggest that the PFC represents competing category representations independently to reduce interference between them.
DepartmentMassachusetts Institute of Technology. Center for Biological & Computational Learning; Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences; McGovern Institute for Brain Research at MIT; Picower Institute for Learning and Memory
Journal of Neuroscience
Society for Neuroscience
Roy, J. E. et al. “Prefrontal Cortex Activity During Flexible Categorization.” Journal of Neuroscience 30.25 (2010): 8519–8528. Web.
Final published version