ERIC Number: EJ973716
Record Type: Journal
Publication Date: 2012-May
Abstractor: As Provided
Serotonin Transporter Knockout Rats Show Improved Strategy Set-Shifting and Reduced Latent Inhibition
Nonkes, Lourens J. P.; van de Vondervoort, Ilse I. G. M.; de Leeuw, Mark J. C.; Wijlaars, Linda P.; Maes, Joseph H. R.; Homberg, Judith R.
Learning & Memory, v19 n5 p190-193 May 2012
Behavioral flexibility is a cognitive process depending on prefrontal areas allowing adaptive responses to environmental changes. Serotonin transporter knockout (5-HTT[superscript -/-]) rodents show improved reversal learning in addition to orbitofrontal cortex changes. Another form of behavioral flexibility, extradimensional strategy set-shifting (EDSS), heavily depends on the medial prefrontal cortex. This region shows functional changes in 5-HTT[superscript -/-] rodents as well. Here we subjected 5-HTT[superscript -/-] rats and their wild-type counterparts to an EDSS paradigm and a supplementary latent inhibition task. Results indicate that 5-HTT[superscript -/-] rats also show improved EDSS, and indicate that reduced latent inhibition may contribute as an underlying mechanism.
Descriptors: Inhibition, Brain, Cognitive Processes, Animals, Control Groups, Comparative Analysis, Experimental Psychology, Experiments, Task Analysis, Learning Processes, Recall (Psychology)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A