High baseline activity in inferior temporal cortex improves neural and behavioral discriminability during visual categorization
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Emadi-2014-High baseline activi.pdf
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4.43 MB
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Author(s)
Emadi, Nazli
Rajimehr, Reza
Esteky, Hossein
Date Issued
November 2014
Journal
Frontiers in Systems Neuroscience
Publisher
Frontiers Research Foundation
Citation
Emadi, Nazli, Reza Rajimehr, and Hossein Esteky. “High Baseline Activity in Inferior Temporal Cortex Improves Neural and Behavioral Discriminability During Visual Categorization.” Front. Syst. Neurosci. 8 (November 3, 2014).
Version
Final published version
Abstract
Spontaneous firing is a ubiquitous property of neural activity in the brain. Recent literature suggests that this baseline activity plays a key role in perception. However, it is not known how the baseline activity contributes to neural coding and behavior. Here, by recording from the single neurons in the inferior temporal cortex of monkeys performing a visual categorization task, we thoroughly explored the relationship between baseline activity, the evoked response, and behavior. Specifically we found that a low-frequency (<8 Hz) oscillation in the spike train, prior and phase-locked to the stimulus onset, was correlated with increased gamma power and neuronal baseline activity. This enhancement of the baseline activity was then followed by an increase in the neural selectivity and the response reliability and eventually a higher behavioral performance.
MIT Department
McGovern Institute for Brain Research at MIT
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.3389/fnsys.2014.00218
