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Related Experiment Video

Updated: Feb 1, 2026

Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis

Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis

Published on: June 20, 2012

Parallel and functionally segregated processing of task phase and conscious content in the prefrontal cortex.

Vishal Kapoor^1,2, Michel Besserve^1,3, Nikos K Logothetis^1,4

¹1Department of Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, 72076 Tübingen, Germany.

Communications Biology

|December 12, 2018

Summary

Researchers identified distinct neuron populations in the lateral prefrontal cortex (LPFC). One group tracks task phases, while another encodes visual consciousness, suggesting segregated functions within the LPFC.

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Combined Transcranial Magnetic Stimulation and Electroencephalography of the Dorsolateral Prefrontal Cortex

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Published on: August 17, 2018

Area of Science:

Neuroscience
Cognitive Neuroscience

Background:

The lateral prefrontal cortex (LPFC) role in conscious perception is debated due to task-related confounds.
Previous studies showed LPFC neurons encode visual consciousness during no-report tasks.

Purpose of the Study:

To investigate if distinct neuronal populations exist within the LPFC.
To differentiate between neurons involved in task-phase activity and those encoding conscious perception.

Main Methods:

Utilized a no-report task with perceptual suppression.
Recorded neuronal activity in the LPFC.
Analyzed neuronal firing patterns and functional connectivity.

Main Results:

Identified a separate LPFC neuronal population with task-phase related activity, exhibiting canonical response patterns (CRPs).
Task-phase related activity remained largely unaffected by perceptual suppression.
Found functional segregation between task-phase related neurons and those encoding conscious perception.

Conclusions:

The LPFC contains concurrently operating but functionally segregated neuronal populations.
One population tracks task phases, while another encodes conscious visual content.
This segregation helps resolve confounds in studying LPFC's role in consciousness.