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Related Experiment Video

Updated: Jun 21, 2026

Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex

Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex

Published on: April 15, 2015

Feature- and order-based timing representations in the frontal cortex.

Aldo Genovesio¹, Satoshi Tsujimoto, Steven P Wise

¹Laboratory of Systems Neuroscience, National Institute of Mental Health, Bethesda, MD 20892, USA. aldo.genovesio@uniroma1.it

|July 31, 2009

Summary

This summary is machine-generated.

Frontal cortex neurons encode stimulus duration and relative timing. This neural activity supports temporal perception and episodic memory by tracking stimulus features and event order.

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Performing Behavioral Tasks in Subjects with Intracranial Electrodes

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Last Updated: Jun 21, 2026

Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex

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Published on: April 15, 2015

Performing Behavioral Tasks in Subjects with Intracranial Electrodes

Performing Behavioral Tasks in Subjects with Intracranial Electrodes

Published on: October 2, 2014

Area of Science:

Neuroscience
Cognitive Neuroscience

Background:

The frontal cortex plays a crucial role in complex cognitive functions, including decision-making and memory.
Understanding how the brain processes temporal information is key to deciphering perception and memory formation.

Purpose of the Study:

To investigate neural activity in the frontal cortex during a duration-discrimination task.
To determine how neurons represent stimulus duration and relative timing.

Main Methods:

Monkeys were trained on a task requiring them to discriminate between the durations of sequential visual stimuli (red and blue).
Electrophysiological recordings were used to monitor neuronal activity in the frontal cortex during task performance.

Main Results:

Some neurons directly encoded the duration of individual stimuli.
A significant population of neurons represented the relative duration between the two stimuli, encoding this information based on stimulus identity (color) and/or event order.
As the decision approached, the neural signal for relative duration based on stimulus identity strengthened while the order-based signal weakened.

Conclusions:

The frontal cortex represents temporal information in multiple ways, including absolute duration and relative duration.
These representations, linked to stimulus features and event order, suggest a role for the frontal cortex in both temporal perception and the formation of episodic memories.