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Related Experiment Video

Updated: Apr 29, 2026

Flypub To Study Ethanol Induced Behavioral Disinhibition and Sensitization

Flypub To Study Ethanol Induced Behavioral Disinhibition and Sensitization

Published on: May 18, 2020

Relationship between ethanol preference and sensation/novelty seeking.

Lidia Manzo¹, Ma José Gómez¹, José E Callejas-Aguilera¹

¹Universidad de Jaén, Spain.

Physiology & Behavior

|May 15, 2014

Summary

High-avoidance Roman high-avoidance inhibitor (RHA-I) rats, which are less anxious, show a greater preference for ethanol compared to low-avoidance Roman low-avoidance inhibitor (RLA-I) rats. Ethanol preference is linked to sensation-seeking behaviors, including novelty exploration.

Keywords:

Ethanol preference Novelty seeking Roman high- and low-avoidance strains Sensation seeking

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Area of Science:

Neuroscience
Behavioral Science
Genetics

Background:

Roman high-avoidance inhibitor (RHA-I) and Roman low-avoidance inhibitor (RLA-I) rat strains exhibit distinct differences in active avoidance and anxiety levels.
RHA-I rats display reduced anxiety compared to RLA-I rats.

Purpose of the Study:

To investigate the relationship between sensation/novelty seeking behaviors and ethanol preference in male RHA-I and RLA-I rats.
To compare ethanol consumption and preference across varying concentrations between the two rat strains.

Main Methods:

Rats were assessed using the hole-board, Y-maze, and emergence tests to evaluate novelty seeking.
Two-bottle preference tests were conducted over 24 hours using ethanol concentrations ranging from 2% to 10% against water.
Factorial analysis was employed to identify behavioral correlates of ethanol preference.

Main Results:

RHA-I rats demonstrated higher activity, more head dipping, and longer exploration of novel environments (Y-maze) compared to RLA-I rats.
RHA-I rats exhibited a significantly higher preference for and consumption of ethanol across all tested concentrations.
Both strains preferred lower ethanol concentrations (2-4%) over water but preferred water over higher concentrations (6-10%).

Conclusions:

Ethanol preference in these rat strains is associated with specific sensation and novelty-seeking behaviors.
Individual differences in anxiety and avoidance behaviors may influence ethanol consumption patterns.
The study highlights a behavioral genetic link between novelty seeking, anxiety, and alcohol preference.