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The study on interaction between habituation and latent inhibition effect

Research Project

Project/Area Number 08610079
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 実験系心理学
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

ISHII Kiyoshi  Nagoya University, School of letters, Professor, 文学部, 教授 (70092989)

Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1998: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1997: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1996: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsHabituation / Latent inhibition / Conditioned suppression / Conditioned flavor-aversion / Rat / 消去 / 記憶検索 / バブロク型条件づけ
Research Abstract

Using rats as the subjects, this project aimed to find the possible interactions between latent inhibition and habituation effects, both of which are produced by stimulus preexposure.
Using the conditioned suppression paradigm, the first study examined the effects of of a second (distractor) stimulus added either during preexposure or during conditioning, on the degree of latent inhibition to the target. Addition of the distractor during conditioning attenuated latent inhibition to the target, while addition of it during preexposure did not. These results suggest that in the conditioned suppression with the stimuli from different modalities, the added distractor functions to disrupt the habituation process of the preexposed stimulus.
On the other hand, the second study which aimed to reexamine the same effect by using the conditioned flavor-aversion paradigm showed that it was rather the distractor added during preexposure which attenuated latent inhibition to the target. In this paradigm, addition of the distractor during conditioning had no effect. It was suggested that in this paradigm addition of the distractor causes the generalization decrement.
The third study explored the effects of duration and amount of the presentation of the flavor on both the habituation and latent inhibition effects. It was found that neither the duration nor the amount of flavor solution presented affected the degree of habiutation shown on the test. On the other hand, the duration but not the amount of the presentation of conditioned stiumulus determined the degree of the latent inhibition effect : the longer the duration, the more salient of the latent inhibition effect was found.

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 石井 澄: "擬人主義の功罪 : 条件づけ研究の立場から -内省的用語に基づく連合学習の過程の理解" 動物心理学研究. 48(2). 233-243 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ishii, Kiyoshi.: "Attenuation of latent inhibition after compound conditioning." Japanese Psychological Research. 41(2). 102-111 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ishii,K.,Haga,Y.and Hishimura,Y.: "Distractor effect on latent inhibition of conditioned flavor-aversion in rats." Japanese Psychological Research. 41未定. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] ISHII,Kiyoshi.: "Applicability of introspective terms fo the understanding of the processes of associative learning." Japanese Journal of Animal Psychology. 48(2). 233-243 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] ISHII,Kiyoshi.: "Attenuation of latent inhibition after compound conditioning." Japanese Psychological Research. 41(2). 102-111 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] ISHII,Kiyoshi., HAGA,Yashaki., and HISHIMURA,Yutaka.: "Distractor effect on latent inhibition of conditioned flavor-aversion in rats." Japanese Psychological Research. 41.(in press). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 石井 澄: "擬人主義の功罪:条件づけ研究の立場から-内省的用語に基づく連合学習の過程の理解" 動物心理学研究. 48(2). 233-243 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ishii. Kiyoshi.: "Altenuation of latent inhibition after compound conditioning." Japanese Psychological Research. 41(2). 102-111 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ishii. K., Haga. Y.and Hishimura. Y.: "Distractor effect on latent inhibition of conditioned fiavor-aversion in rats." Japanese Psychological Research. 41 印刷中. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ishii, Kiyoshi: "Attenuation of Latent Inhibition Effect after Compound Conditioning" The Japanese Psychological Research.Vol.40. (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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