Cited by 25Schizophrenia research and treatmentNeural and Behavioral Psychology StudiesNeurotransmitter Receptor Influence on Behavior

Impairments in set-shifting but not reversal learning in the neonatal ventral hippocampal lesion model of schizophrenia: further evidence for medial prefrontal deficits

Placek, Katerina, Dippel, William C., Jones, Shelby, Brady, Anne Marie·2013·Behavioural Brain Research

Abstract

The executive function processes of set-shifting and reversal learning in rodents are mediated by the medial prefrontal cortex and the orbitofrontal cortex, respectively. Here, we investigated both set-shifting and reversal learning in a developmental animal model of schizophrenia, the neonatal ventral hippocampal lesion (NVHL) model. The NVHL manipulation is known to disrupt development of the medial prefrontal cortex, and to impair behaviors dependent on this area, but potential orbitofrontal abnormalities and reversal learning deficits are less well studied. Animals received excitotoxic lesions of the ventral hippocampus (NVHL) or a sham treatment during the first postnatal week, and all animals were subsequently tested in adulthood on either an operant set-shifting or an operant reversal task. Results indicated that NVHL animals were able to acquire a simple discrimination rule and exhibited normal reversal learning, but were impaired on a prefrontal-dependent set-shifting task. Furthermore, this set-shifting deficit was due to an increase in perseverative errors, which indicate difficulty suppressing a previously learned strategy and result from medial prefrontal insult. Together, these results confirm and extend the idea that cognitive impairments in the NVHL animal are primarily driven by medial prefrontal abnormalities, while the orbitofrontal cortex may remain relatively unaffected.

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Crossref · 10.1016/j.bbr.2013.08.034

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  • Reversal learning depends on an intact orbitofrontal cortex to inhibit the previously learned response.

    “Such reversal is known to depend on an intact orbitofrontal cortex to inhibit the prior learned response (Placek et al., 2013; Rolls, 2016).”

    From The effects of early life stress on reward processing (2018) · cites this paper as Placek et al., 2013

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Authors
Placek, K., Dippel, W. C., Jones, S., & Brady, A. M.
Affiliations
St. Mary's College of Maryland (US)
Corresponding author
Brady, Anne Marie
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2013-11
Volume
256
Pages
405-413
ISSN
0166-4328 (ISSN-L)
OpenAlex
W1969309428
Cited by
25
References
72
Citations by year
2024: 1 · 2022: 2 · 2021: 4 · 2020: 1 · 2019: 2 · 2018: 3 · 2017: 2 · 2016: 8 · 2015: 1
FWCI
2.12
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
set-shifting, reversal learning, animal models of schizophrenia, medial prefrontal cortex, orbitofrontal cortex, executive function, perseverative errors, excitotoxic lesions, cognitive impairment
MeSH terms
Animals, Attention, Disease Models, Animal, Hippocampus, Ibotenic Acid, Reversal Learning, Schizophrenia, Set, Psychology, Rats, Sprague-Dawley, Prefrontal Cortex, Maze Learning, Rats

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