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Updated: Mar 29, 2026

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Frontal-to-Parietal Theta Interactions Mediate Tactile Decision-Making.

Pritom Mukherjee1, Sydney Apraku1, Mukesh Dhamala1,2,3,4

  • 1Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30303, USA.

Life (Basel, Switzerland)
|March 28, 2026
PubMed
Summary
This summary is machine-generated.

Accurate tactile decisions involve enhanced brainwave activity (theta and alpha power) and stronger frontal-to-parietal communication in the theta band. This suggests improved sensory processing and top-down control are crucial for successful spatial judgments.

Keywords:
alpha oscillationsdecision-makingfronto-parietal networktactile stimulitheta oscillations

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Sensory Perception

Background:

  • Decision-making integrates sensory input with cognitive control.
  • Neural oscillations, particularly theta and alpha bands, are implicated in cognitive processes.
  • Fronto-parietal networks play a key role in executive functions and sensory integration.

Purpose of the Study:

  • To investigate neural dynamics and fronto-parietal connectivity during tactile spatial discrimination.
  • To examine the role of theta and alpha oscillations in decision accuracy.
  • To elucidate the contribution of long-range neural communication to tactile judgment.

Main Methods:

  • Electroencephalography (EEG) recording during a tactile spatial discrimination task.
  • Time-frequency analysis to assess theta and alpha power.
  • Multivariate Granger causality to evaluate directional fronto-parietal connectivity.

Main Results:

  • Higher theta and alpha power observed in correct decision trials compared to incorrect ones.
  • Increased frontal-to-parietal theta-band connectivity during both pre- and post-stimulus periods for accurate decisions.
  • Evidence for enhanced preparatory and mnemonic engagement in successful trials.

Conclusions:

  • Theta-band fronto-parietal communication is a critical neural mechanism for accurate tactile decision-making.
  • Enhanced oscillatory power and connectivity reflect improved sensory evidence integration and top-down control.
  • Findings contribute to understanding the neural basis of somatosensory perception and cognitive control.