Zeraati, Roxana, Shi, Yan-Liang, Steinmetz, Nicholas, Gieselmann, Marc, Thiele, Alexander, Moore, Tirin, Levina, Anna, Engel, Tatiana (2021) Intrinsic timescales in the visual cortex change with selective attention and reflect spatial connectivity. bioRxiv. (Submitted)
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Abstract
Intrinsic timescales characterize dynamics of endogenous fluctuations in neural activity. Variation of intrinsic timescales across the neocortex reflects functional specialization of cortical areas, but less is known about how intrinsic timescales change during cognitive tasks. We measured intrinsic timescales of local spiking activity within columns of area V4 while monkeys performed spatial attention tasks. The ongoing spiking activity unfolded across at least two distinct timescales, fast and slow. The slow timescale increased when monkeys attended to the receptive fields location and correlated with reaction times. By evaluating predictions of several network models, we found that spatiotemporal correlations in V4 activity were best explained by the model in which multiple timescales arise from recurrent interactions shaped by spatially arranged connectivity, and attentional modulation of timescales results from an increase in the efficacy of recurrent interactions. Our results suggest that multiple timescales arise from the spatial connectivity in the visual cortex and flexibly change with the cognitive state due to dynamic effective interactions between neurons.
| Item Type: | Paper |
|---|---|
| Subjects: | organism description > animal organism description > animal > mammal organism description > animal > mammal > primates > monkey organism description > animal > mammal > primates organs, tissues, organelles, cell types and functions > tissues types and functions organs, tissues, organelles, cell types and functions > tissues types and functions > visual cortex |
| CSHL Authors: | |
| Communities: | CSHL labs > Engel lab |
| SWORD Depositor: | CSHL Elements |
| Depositing User: | CSHL Elements |
| Date: | 2021 |
| Date Deposited: | 29 Sep 2023 17:37 |
| Last Modified: | 26 Jan 2024 16:55 |
| Related URLs: | |
| URI: | https://repository.cshl.edu/id/eprint/41068 |
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