Motivational Effects of Methamphetamine as Measured by the Runway Method Using Priming Stimulation of Intracranial Self-stimulation Behavior

• Sagara Hidenori

  Department of Hospital Pharmacy, Okayama University Medical School

• Kitamura Yoshihisa

  Department of Hospital Pharmacy, Okayama University Medical School Department of Hospital Pharmacentical Care and Health Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University

• Sendo Toshiaki

  Department of Hospital Pharmacy, Okayama University Medical School

• Araki Hiroaki

  Division of Pharmacy, Ehime University Hospital

• Gomita Yutaka

  Department of Hospital Pharmacy, Okayama University Medical School

Abstract

Priming stimulation is known to promote the motivational effects of intracranial self-stimulation (ICSS) behavior. The runway method using priming stimulation can experimentally distinguish the reward and motivational effects of ICSS behavior. In this study, we examined the motivational effect of a drug as determined by the runway method using priming stimulation of ICSS behavior. Electrodes were implanted chronically into the medial forebrain bundle (MFB) of the rats. A lever for stimulation of the MFB was set on the opposite side of the start box in the apparatus. The rats were trained to obtain a reward stimulation (50—200 μA, 0.2 ms, 60 Hz) of the MFB by pressing the goal lever, and then priming stimulation of the MFB was applied. After priming stimulation, rats were placed in the start box of the runway apparatus and the time taken by the rat to press the lever was recorded. Priming stimulation frequency was significantly correlated with running speed (r=0.897, p<0.05). Methamphetamine (1, 3 mg/kg) induced an increase in running speed (F(3, 20)=16.257, p<0.01), and was further increased with increase in priming stimulation frequency. In addition, methamphetamine significantly enhanced the motivational effect. These results suggest that the runway method using priming stimulation of ICSS behavior may be an effective way to evaluate the enhancing effect of a drug on motivation.

Journal

• Biological and Pharmaceutical Bulletin

  Biological and Pharmaceutical Bulletin 31 (4), 541-545, 2008

  The Pharmaceutical Society of Japan

Keywords

• intracranial self-stimulation
• methamphetamine
• motivation
• priming stimulation
• runway

Details

• CRID: 1390282679603128064
• NII Article ID: 110006680481
• NII Book ID: AA10885497
• DOI: 10.1248/bpb.31.541
• ISSN: 13475215
• ISSN: 09186158
• NDL BIB ID: 9431439
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9431439
• Web Site: http://www.jstage.jst.go.jp/article/bpb/31/4/31_4_541/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2008246250
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed