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Functional connectivity between prefrontal cortex and striatum estimated by phase locking value.

Yan Zhang1, Xiaochuan Pan1, Rubin Wang1

  • 1Institute for Cognitive Neurodynamics, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237 People's Republic of China.

Cognitive Neurodynamics
|June 9, 2016
PubMed
Summary
This summary is machine-generated.

The prefrontal cortex (PFC) and striatum show reward information in beta and high gamma bands. Functional connectivity between these areas varies with reward size, suggesting beta synchrony regulates behavior in small reward conditions.

Keywords:
Beta bandGamma bandPhase-locking valuePrefrontal cortexStriatum

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Computational Neuroscience

Background:

  • The prefrontal cortex (PFC) and striatum are crucial for cognitive functions.
  • Their interaction is vital for reward processing and decision-making.

Purpose of the Study:

  • To investigate the interactive functions of the PFC and striatum during reward processing.
  • To analyze neural synchrony and information encoding in different frequency bands.

Main Methods:

  • Simultaneous local field potential (LFP) recordings from the PFC and striatum in monkeys.
  • Analysis of LFP power in beta, low gamma, and high gamma bands.
  • Calculation of phase-locking value (PLV) to assess PFC-striatum synchrony.

Main Results:

  • Both PFC and striatum encoded reward information in the beta band.
  • Reward information was present in the PFC's high gamma band, but not the striatum's.
  • PLV differed across task periods and frequency bands.
  • Higher beta band PLV in small reward conditions; higher high gamma band PLV in large reward conditions.

Conclusions:

  • Functional connectivity between PFC and striatum is modulated by task periods and reward magnitude.
  • Beta band synchrony may play a role in regulating behavioral output, particularly in small reward scenarios.