PT - JOURNAL ARTICLE AU - Goudarzi, Morteza Moazami AU - Cromer, Jason AU - Roy, Jefferson AU - Miller, Earl K. TI - Neuronal rhythms orchestrate cell assembles to distinguish perceptual categories AID - 10.1101/191247 DP - 2017 Jan 01 TA - bioRxiv PG - 191247 4099 - http://biorxiv.org/content/early/2017/09/20/191247.short 4100 - http://biorxiv.org/content/early/2017/09/20/191247.full AB - Categories are reflected in the spiking activity of neurons. However, how neurons form ensembles for categories is unclear. To address this, we simultaneously recorded spiking and local field potential (LFP) activity in the lateral prefrontal cortex (lPFC) of monkeys performing a delayed match to category task with two independent category sets (Animals: Cats vs Dogs; Cars: Sports Cars vs Sedans). We found stimulus and category information in alpha and beta band oscillations. Different category distinctions engaged different frequencies. There was greater spike field coherence (SFC) in alpha (∼8-14 Hz) for Cats and in beta (∼16-22 Hz) for Dogs. Cars showed similar differences, albeit less pronounced: greater alpha SFC for Sedans and greater beta SFC for Sports Cars. Thus, oscillatory rhythms can help coordinate neurons into different ensembles. Engagement of different frequencies may help differentiate the categories.