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Paper Abstract and Keywords
Presentation 2010-10-23 10:55
The suppression of carbachol-induced beta oscillation in hippocampal slices obtained from the rat in light phase
Hiroki Nakatsuka, Kiyohisa Natsume (KIT) NC2010-42
Abstract (in Japanese) (See Japanese page) 
(in English) Brain has circadian rhythm and the rhythm affects the neuronal activities. Cholinergic agent carbachol induces $\beta$ oscillation intermittently in rat hippocampal slices. In the present study, whether the carbachol-induced $\beta$ oscillation is generated differently in the light- and dark-phase or not was studied. Carbachol induced  oscillations which are derived from the rat brains in the light and dark phases. The frequencies, duration and amplitude of the $\beta$ oscillations in the light and dark phase slices are not significantly different. On the other hand, the inter-burst intervals (IBI) in the dark- and light-phase slices were 17.8 ± 1.2 s and 24.1 ± 1.4 s, respectively. The difference was significant. The muscarinic receptor antagonist atropine suppressed the carbachol-induced $\beta$ oscillation, while the nicotinic receptor antagonist d-tubocrarine significantly decreased the frequency of the oscillation. d-tubocrarine did not affect the other parameters of the oscillation. The GABAA receptor antagonist gabazine significantly shortened IBI of the oscillation in the light-phase slices, while it did not change it in the dark-phase slices. In addition, gabazine did not affect the other parameter, duration, frequency and amplitude. Because carbachol-induced  oscillation generates in CA3 neuronal network, these results suggest that the interneurons in CA3 will activate in the light phase, and modulate the neuronal rhythm induced in hippocampus.
Keyword (in Japanese) (See Japanese page) 
(in English) Hippocampal slices / Circadian rhythm / Beta oscillation / Carbachol / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 246, NC2010-42, pp. 1-4, Oct. 2010.
Paper # NC2010-42 
Date of Issue 2010-10-16 (NC) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF NC2010-42

Conference Information
Committee NC  
Conference Date 2010-10-23 - 2010-10-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu Inst. Tech. (Kitakyushu Sci. and Res. Park) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Implementation and Systemization of Neurocomputing 
Paper Information
Registration To NC 
Conference Code 2010-10-NC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) The suppression of carbachol-induced beta oscillation in hippocampal slices obtained from the rat in light phase 
Sub Title (in English)  
Keyword(1) Hippocampal slices  
Keyword(2) Circadian rhythm  
Keyword(3) Beta oscillation  
Keyword(4) Carbachol  
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1st Author's Name Hiroki Nakatsuka  
1st Author's Affiliation Kyushu Institute of Technology (KIT)
2nd Author's Name Kiyohisa Natsume  
2nd Author's Affiliation Kyushu Institute of Technology (KIT)
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Speaker Author-1 
Date Time 2010-10-23 10:55:00 
Presentation Time 25 minutes 
Registration for NC 
Paper # NC2010-42 
Volume (vol) vol.110 
Number (no) no.246 
Page pp.1-4 
#Pages 4 
Date of Issue 2010-10-16 (NC) 

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