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Interval Timing: Stopping the Internal Stopwatch by Photostimulation.

Fuat Balcı1

  • 1Department of Psychology & Research Center for Translational Medicine, Koç University, Sarıyer, Istanbul, 34450, Turkey.

Current Biology : CB
|December 20, 2017
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New research reveals that activating a specific neural pathway in mice can pause or reset their internal timing mechanism. This finding impacts our understanding of how animals anticipate events, like drinking.

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Area of Science:

  • Neuroscience
  • Animal Behavior
  • Chronobiology

Background:

  • Animals rely on internal time estimations to predict and prepare for future events.
  • Anticipatory actions are crucial for survival and adaptive behaviors.

Purpose of the Study:

  • To investigate the neural mechanisms underlying time interval estimation in mice.
  • To determine if specific neural pathways can modulate the internal timing system.

Main Methods:

  • Utilized optogenetics (photostimulation) to target and activate a neural pathway involved in drinking behavior coordination in mice.
  • Monitored and measured the timing of subsequent anticipatory responses following neural pathway stimulation.

Main Results:

  • Photostimulation of the targeted neural pathway significantly delayed anticipatory responses.
  • This delay suggests a pausing or resetting of the internal 'stopwatch' mechanism governing time perception.

Conclusions:

  • Specific neural pathways can actively modulate an animal's internal estimation of time intervals.
  • This research provides insights into the neural basis of temporal prediction and its potential manipulation.