JaLCDOI 10.18926/AMO/30940
FullText URL fulltext.pdf
Author Sagara, Hidenori| Kitamura, Yoshihisa| Esumi, Satoru| Sendo, Toshiaki| Araki, Hiroaki| Gomita, Yutaka|
Abstract <p>It is well known that priming stimulation promotes the motivational effects of intracranial self-stimulation(ICSS) behavior. An experimental methodology using the runway method could separately study the reward and motivational effects of ICSS behavior. In the present study, we examined the motivational effect of nicotine as measured by the runway method using priming stimulation of ICSS behavior. Electrodes were implanted chronically into the medial forebrain bundle (MFB) in rats. A lever for stimulation of the MFB was set on the opposite side of the start box in the apparatus, and rats were trained to get a reward stimulation (50-200 microA, 0.2 ms, 60 Hz) of MFB when the goal lever was pressed. After the rats were trained to press the lever, a priming stimulation of the MFB was performed. After receiving the priming stimulation, rats were placed at the start box of the runway apparatus, and the running time duration until the goal lever was pressed was measured. Subcutaneous injection of nicotine at a dose of 0.2mg/kg produced an increase in running speed to obtain the reward stimulation, and priming stimulation facilitated the motivational effect to obtain the electrical brain stimulation reward in the rats. These results suggest that nicotine significantly enhanced the motivational effect on ICSS behavior as determined using the runway method. The runway method using priming stimulation of ICSS behavior may become the new experimental methodology with which to measure the motivational effect of some drugs.</p>
Keywords intracranial self-stimulation runway nicotine priming stimulation motivational effect
Amo Type Original Article
Published Date 2008-08
Publication Title Acta Medica Okayama
Volume volume62
Issue issue4
Publisher Okayama University Medical School
Start Page 227
End Page 233
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 18766205
Web of Sience KeyUT 000258680900002
JaLCDOI 10.18926/AMO/40501
FullText URL 64_5_267.pdf
Author Sagara, Hidenori| Sendo, Toshiaki| Gomita, Yutaka|
Abstract In the runway model of intracranial self-stimulation (ICSS) experimentation, the experimental animal is timed in running a fixed distance to depress a lever that releases electrical stimulation to an electrode implanted along its medial forebrain bundle. This ICSS has both a reward and a motivational component. Using the runway method and priming stimulation, we designed an experimental method for directly measuring motivation. An assessment of pharmacological agents that are known to influence motivational states was also undertaken. Using the experimental methods that we created, we observed prominent changes in running speed when animals were exposed to methamphetamine and nicotine. According to these data, the runway method employing intracranial self-stimulation behavior may be useful for the evaluation of substances that act on motivation. We review the underlying neuropharmacological and anatomical functions associated with our experimental methods. We hope that this technique will be used to scientifically evaluate the impact of drugs and/or therapeutic interventions on human motivation.
Keywords intracranial self-stimulation behavior motivational effect methamphetamine nicotine
Amo Type Review
Published Date 2010-10
Publication Title Acta Medica Okayama
Volume volume64
Issue issue5
Publisher Okayama University Medical School
Start Page 267
End Page 275
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2010 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 20975759
Web of Sience KeyUT 000283563300001
Author Esumi, Satoru| Sagara, Hidenori| Nakamoto, Akihiko| Kawasaki, Yoichi| Gomita, Yutaka| Sendo, Toshiaki|
Published Date 2013-04-15
Publication Title Behavioural Brain Research
Volume volume243
Content Type Journal Article