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Related Experiment Video

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Performing Behavioral Tasks in Subjects with Intracranial Electrodes

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[Changes of Alpha Cortical Potentials Spatial Synchronization on Value Go/NoGo Stimuli].

E A Kostandov, E A Cheremushkin

Zhurnal Vysshei Nervnoi Deiatelnosti Imeni I P Pavlova

|February 5, 2016

Summary

This summary is machine-generated.

Positive and negative stimuli influence prefrontal cortex control over visual perception, altering cognitive set plasticity. Brain activity in the alpha rhythm range reveals how these top-down influences impact visual processing and hemispheric specialization.

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Area of Science:

Neuroscience
Cognitive Psychology
Neuroimaging

Context:

Investigating cognitive set plasticity in healthy individuals.
Examining the impact of positive and negative Go/NoGo stimuli on visual perception.
Understanding prefrontal cortex (PFC) top-down influences on visual processing.

Purpose:

To determine how coordinated Go/NoGo stimuli affect PFC top-down influences on visual perception.
To explore the relationship between alpha rhythm fluctuations and top-down influences.
To investigate the role of hemispheric specialization in cognitive set rigidity.

Summary:

Introduction of Go/NoGo stimuli modulated PFC top-down influences on visual perception, affecting cognitive set plasticity.
Cortical topography of top-down influences, particularly in response to NoGo stimuli, was linked to changes in alpha rhythm power.
Spatial synchronization of alpha potentials varied with set plasticity, with more rigid sets showing stronger left-hemisphere coherence between PFC and other cortical areas.

Impact:

Findings suggest that alpha rhythm dynamics and hemispheric specialization play crucial roles in cognitive set flexibility and rigidity.
Left-hemisphere activation, involving speech and semantic functions, may compensate for cognitive rigidity.
This research provides insights into the neural mechanisms underlying cognitive control and perceptual plasticity.