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Task complexity modifies the search strategy of rats.

Chad M Ruprecht, C Drew Taylor, Joshua E Wolf

Behavioural Brain Research

|January 14, 2014

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Rats use different search strategies based on task complexity. An open field favored place responding with multiple locations, while a plus-maze favored directional responding.

Area of Science:

Neuroscience
Animal Behavior
Spatial Cognition

Background:

Animals use diverse strategies, like place responding, for navigation and foraging.
Understanding factors influencing these strategies is crucial for cognitive research.

Purpose of the Study:

To investigate how task complexity influences spatial search strategies in rats.
To compare place responding and directional responding in different apparatus.

Main Methods:

Rats were trained to find food in open-field and plus-maze tasks with varying search locations.
Apparatus shifts were used to differentiate between location-based (place) and direction-based (directional) responding.

Main Results:

The open field supported place responding with 4 or 25 locations, but not 2.

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The plus-maze consistently elicited strong directional responding.

Conclusions:

Task demands, specifically the number of locations and apparatus type, significantly shape spatial search strategies.
The four-choice open field is a viable model for studying place responding, similar to the Morris water task.