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Neural coding: time contraction and dilation in the striatum.

Helen Motanis¹, Dean V Buonomano¹

¹Departments of Neurobiology and Psychology, Integrative Center for Learning and Memory, Brain Research Institute, University of California, Los Angeles, CA 90095, USA.

Current Biology : CB

|May 6, 2015

Summary

The brain

Area of Science:

Neuroscience
Chronobiology
Cognitive Science

Background:

The neural mechanisms underlying temporal interval encoding remain largely unknown.
Understanding time perception is crucial for explaining cognitive functions like memory and decision-making.

Purpose of the Study:

To investigate the role of striatal neurons in the neural encoding of time.
To determine if the neural representation of time can be modulated to represent different temporal intervals.

Main Methods:

Electrophysiological recordings were performed in rats during a temporal interval timing task.
Analysis focused on the firing patterns of striatal neurons in relation to presented time intervals.

Main Results:

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Striatal neurons exhibit firing patterns that correlate with the passage of time.

The neural code for time can be compressed or expanded, effectively "dilating" or "contracting" the perceived duration of intervals.

Conclusions:

Striatal neurons play a significant role in the brain's ability to encode and represent temporal information.
The dynamic nature of this neural code suggests a flexible mechanism for timing various durations.