Cited by 32Memory and Neural MechanismsNeuroscience and Music PerceptionNeural and Behavioral Psychology Studies

The effects of hippocampal system lesions on a novel temporal discrimination task for rats

Kyd, R.J., Pearce, J.M., Haselgrove, M., Amin, E., Aggleton, J.P.·2008·Behavioural Brain Research

Abstract

A novel, appetitive, Pavlovian conditioning task was used to assess interval timing. Experiment 1 showed that normal rats could discriminate between tones of 1.5s and 0.5s duration, or between tones of 12.0 s and 3.0 s duration. Learning was demonstrated by a greater duration of magazine responding in the period before the delivery of a food reward and after cessation of the CS+ compared to the same time period after cessation of the CS-. Learning was, however, asymmetric as it was much quicker when the CS+ was the longer of the two durations (1.5s and 12.0 s, respectively). Experiment 2 assessed the impact of fornix lesions on the acquisition of one version of this task (CS+ 1.5s, CS- 0.5s). No evidence was found of a change in discrimination learning following surgery. Experiment 3 examined whether rats with either fornix or hippocampal lesions affected discriminations between 12.0 s and 3.0 s stimuli. Again, there was no evidence of a lesion-induced deficit. T-maze alternation training confirmed the effectiveness of these lesions. The results not only reveal that neither the fornix nor the hippocampus is necessary for distinguishing temporal intervals within the ranges tested but also showed how under some circumstances these lesions can leave trace conditioning intact.

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Crossref · 10.1016/j.bbr.2007.09.010

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Authors
Kyd, R. J., Pearce, J. M., Haselgrove, M., Amin, E., & Aggleton, J. P.
Affiliations
  • University of Cambridge (GB)
  • Cardiff University (GB)
  • University of Nottingham (GB)
Corresponding author
Aggleton, J.P.
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2008-02
Volume
187
Issue
1
Pages
159-171
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2108962518
Cited by
32
References
66
Citations by year
2024: 1 · 2021: 1 · 2020: 1 · 2019: 2 · 2018: 2 · 2015: 4 · 2014: 5 · 2013: 3 · 2012: 3
FWCI
1.00
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neuroscience and Music Perception
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
interval timing, temporal discrimination, hippocampus, fornix, hippocampal lesions, fornix lesions, classical conditioning, trace conditioning, appetitive conditioning, T-maze alternation, rats
MeSH terms
Analysis of Variance, Animals, Attention, Conditioning, Classical, Discrimination, Psychological, Discrimination Learning, Hippocampus, Male, Psychomotor Performance, Time Perception, Fornix, Brain, Rats

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