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Updated: May 4, 2026

The 5-Choice Serial Reaction Time Task: A Task of Attention and Impulse Control for Rodents
Published on: August 10, 2014
More GABA, less distraction: a neurochemical predictor of motor decision speed
Petroc Sumner1, Richard A E Edden, Aline Bompas
1Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, UK. sumnerp@cardiff.ac.uk
Abstract:
People vary markedly in the efficiency with which they can resolve competitive action decisions, even simple ones such as shifting gaze to one stimulus rather than another. We found that an individual's ability to rapidly resolve such competition is predicted by the concentration of GABA, the main inhibitory neurotransmitter, in a region of frontal cortex that is relevant for eye movements, but not in a control region (occipital cortex).
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