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Rearing and Head Scanning as Functionally Equivalent Information-Seeking Behaviors.

Ryan Troha1, Billy Gregory1, Dylan Burks1

  • 1Department of Psychological and Brain Sciences, 1101 E 10th St, Indiana University, Bloomington, IN 47405.

Biorxiv : the Preprint Server for Biology
|May 18, 2026
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Summary
This summary is machine-generated.

Rats use rearing and head scanning behaviors to gather spatial information for memory. Environmental changes, like wall height, alter which behavior is used, suggesting they are interchangeable for spatial memory encoding.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Animal Behavior

Background:

  • Spatial memory is vital for navigation and adaptation.
  • The hippocampus and its spatial tuning are key to spatial memory.
  • Behavioral strategies for spatial encoding, such as rearing and head scanning, are not fully understood.

Purpose of the Study:

  • To investigate the functional relationship between rearing and attentive head scanning behaviors.
  • To determine if environmental context influences the expression of these behaviors.
  • To test if rearing and head scanning are interchangeable for spatial memory encoding.

Main Methods:

  • Rats were observed in a radial-arm maze spatial working memory task.
  • The height of the maze walls was manipulated (tall vs. short).
  • Rearing and head scanning behaviors were quantified and analyzed in relation to wall height and location.

Main Results:

  • Rats reared significantly less when maze walls were shortened.
  • Shortened walls led to increased attentive head scanning.
  • Head scanning occurred in locations previously associated with rearing, suggesting a functional link.

Conclusions:

  • Rearing and head scanning appear to be functionally related and potentially interchangeable behaviors.
  • Environmental structure influences the expression of these spatial information-gathering behaviors.
  • These findings provide a basis for future research into hippocampal activity during these behaviors.