Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

Novelty and anxiolytic drugs dissociate two components of hippocampal theta in behaving rats.

Wells, C.E. and Amos, D.P. and Jeewajee, A. and Douchamps, V. and Rodgers, R.J. and O'Keefe, J. and Burgess, N. and Lever, C. (2013) 'Novelty and anxiolytic drugs dissociate two components of hippocampal theta in behaving rats.', Journal of neuroscience., 33 (20). pp. 8650-8667.

Abstract

Hippocampal processing is strongly implicated in both spatial cognition and anxiety and is temporally organized by the theta rhythm. However, there has been little attempt to understand how each type of processing relates to the other in behaving animals, despite their common substrate. In freely moving rats, there is a broadly linear relationship between hippocampal theta frequency and running speed over the normal range of speeds used during foraging. A recent model predicts that spatial-translation-related and arousal/anxiety-related mechanisms of hippocampal theta generation underlie dissociable aspects of the theta frequency–running speed relationship (the slope and intercept, respectively). Here we provide the first confirmatory evidence: environmental novelty decreases slope, whereas anxiolytic drugs reduce intercept. Variation in slope predicted changes in spatial representation by CA1 place cells and novelty-responsive behavior. Variation in intercept predicted anxiety-like behavior. Our findings isolate and doubly dissociate two components of theta generation that operate in parallel in behaving animals and link them to anxiolytic drug action, novelty, and the metric for self-motion.

Item Type:Article
Full text:(VoR) Version of Record
Download PDF
(2792Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1523/JNEUROSCI.5040-12.2013
Date accepted:No date available
Date deposited:24 July 2013
Date of first online publication:May 2013
Date first made open access:No date available

Save or Share this output

Export:
Export
Look up in GoogleScholar