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Related Experiment Video

Updated: Jul 1, 2025

The Adventures of Fundi Intervention Based on the Cognitive and Emotional Processing in Attention Deficit Hyperactive Disorder Patients

The Adventures of Fundi Intervention Based on the Cognitive and Emotional Processing in Attention Deficit Hyperactive Disorder Patients

Published on: June 12, 2020

Taking time to compose thoughts with prefrontal schemata.

Kwang Il Ryom¹, Anindita Basu¹, Debora Stendardi²

¹SISSA - Cognitive Neuroscience, via Bonomea 265, 34136, Trieste, Italy.

Experimental Brain Research

|March 14, 2024

Summary

This summary is machine-generated.

The prefrontal cortex can direct brain states for coherent thought when its microcircuit parameters favor strong, lasting attractors. This frontal guidance is most effective when posterior brain regions are less likely to spontaneously change states, explaining deficits seen in patients with prefrontal lesions.

Keywords:

Associative memory Cortical networks Latching dynamics Mind-wandering Sequential retrieval Spontaneous cognition

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Published on: September 28, 2018

Area of Science:

Neuroscience
Computational Neuroscience
Cognitive Science

Background:

The prefrontal cortex (PFC) plays a crucial role in executive functions, including the generation of coherent thought streams.
Understanding the conditions under which the PFC directs cortical dynamics to produce sequential brain states is essential for explaining cognitive processes.

Purpose of the Study:

To investigate the conditions under which the prefrontal cortex can direct the composition of brain states to generate coherent streams of thoughts.
To model how microcircuit properties influence the PFC's ability to guide temporal sequences of neural activity.

Main Methods:

Utilized a simplified Potts model of cortical dynamics, divided into frontal and posterior halves.
Analyzed how regulated activity levels and microcircuit statistical parameters (e.g., local attractors) influence the direction of temporal sequences.

Main Results:

The frontal cortex tends to lead the composition of brain states if it possesses more numerous, longer-lasting, and stronger local attractors.
The PFC's guidance is more effective when posterior cortical regions exhibit less spontaneous state transition.
Modeling a mild prefrontal lesion accounts for observed deficits in mind-wandering and event construction in patients.

Conclusions:

Microcircuit properties, particularly local attractors in the frontal cortex, are critical for its ability to direct coherent streams of thought.
The PFC's role in temporal sequencing may involve enforcing temporally-oriented schemata, contrasting with the hippocampus's atemporal contextual contribution.
The model provides insights into cognitive deficits associated with prefrontal cortex dysfunction.