Spike frequency adaptation in primate lateral prefrontal cortex neurons results from interplay between intrinsic properties and circuit dynamics

Spike frequency adaptation in primate lateral prefrontal cortex neurons results from interplay between intrinsic properties and circuit dynamics

Summary: Cortical neurons in brain slices display intrinsic spike frequency adaptation (I-SFA) to constant current inputs, while extracellular recordings show extrinsic SFA (E-SFA) during sustained visual stimulation. Inferring how I-SFA contributes to E-SFA during behavior is challenging due to the...

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Main Authors: Nils A. Koch, Benjamin W. Corrigan, Michael Feyerabend, Roberto A. Gulli, Michelle S. Jimenez-Sosa, Mohamad Abbass, Julia K. Sunstrum, Sara Matovic, Megan Roussy, Rogelio Luna, Samuel A. Mestern, Borna Mahmoudian, Susheel Vijayraghavan, Hiroyuki Igarashi, Kartik S. Pradeepan, William J. Assis, J. Andrew Pruszynski, Shreejoy Tripathy, Jochen F. Staiger, Guillermo Gonzalez-Burgos, Andreas Neef, Stefan Treue, Stefan Everling, Wataru Inoue, Anmar Khadra, Julio C. Martinez-Trujillo
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Cell Reports
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CP: Neuroscience
Online Access:http://www.sciencedirect.com/science/article/pii/S2211124724015109
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Summary:Summary: Cortical neurons in brain slices display intrinsic spike frequency adaptation (I-SFA) to constant current inputs, while extracellular recordings show extrinsic SFA (E-SFA) during sustained visual stimulation. Inferring how I-SFA contributes to E-SFA during behavior is challenging due to the isolated nature of slice recordings. To address this, we recorded macaque lateral prefrontal cortex (LPFC) neurons in vivo during a visually guided saccade task and in vitro in brain slices. Broad-spiking (BS) putative pyramidal cells and narrow-spiking (NS) putative inhibitory interneurons exhibit both E-SFA and I-SFA. Developing a data-driven hybrid circuit model comprising NS model neurons receiving BS input reveals that NS model neurons exhibit longer SFA than observed in vivo; however, adding feedforward inhibition corrects this in a manner dependent on I-SFA. Identification of this circuit motif shaping E-SFA in LPFC highlights the roles of both intrinsic and network mechanisms in neural activity underlying behavior.
ISSN:2211-1247

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