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JYX > Artikkelit > Yhteiskuntatieteellinen tiedekunta 31.12.2016 saakka > View Item

Hippocampal theta activity is selectively associated with contingency detection but not discrimination in rabbit discrimination-reversal eyeblink conditioning

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Nokia, M., & Wikgren, J. (2010). Hippocampal theta activity is selectively associated with contingency detection but not discrimination in rabbit discrimination-reversal eyeblink conditioning. Hippocampus, 20(4), 457-460. https://doi.org/10.1002/hipo.20696
Published in
Hippocampus
Authors
Nokia, Miriam |
Wikgren, Jan
Date
2010
Discipline
PsykologiaMonitieteinen aivotutkimuskeskusPsychologyCentre for Interdisciplinary Brain Research
Copyright
© 2009 Wiley-Liss, Inc. This is a final draft version of an article whose final and definitive form has been published by Wiley. Published in this repository with the kind permission of the publisher.

 
The relative power of the hippocampal theta-band (∼6 Hz) activity (theta ratio) is thought to reflect a distinct neural state and has been shown to affect learning rate in classical eyeblink conditioning in rabbits. We sought to determine if the theta ratio is mostly related to the detection of the contingency between the stimuli used in conditioning or also to the learning of more complex inhibitory associations when a highly demanding delay discrimination-reversal eyeblink conditioning paradigm is used. A high hippocampal theta ratio was not only associated with a fast increase in conditioned responding in general but also correlated with slow emergence of discriminative responding due to sustained responding to the conditioned stimulus not paired with an unconditioned stimulus. The results indicate that the neural state reflected by the hippocampal theta ratio is specifically linked to forming associations between stimuli rather than to the learning of inhibitory associations needed for successful discrimination. This is in line with the view that the hippocampus is responsible for contingency detection in the early phase of learning in eyeblink conditioning. ...
Publisher
Wiley
ISSN Search the Publication Forum
1098-1063
Keywords
oskillaatio muisti memory oscillation ehdollistaminen hippokampus oppiminen
DOI
https://doi.org/10.1002/hipo.20696
URI

http://urn.fi/URN:NBN:fi:jyu-201512154040

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/19450307

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