Cited by 108Memory and Neural MechanismsNeural and Behavioral Psychology StudiesMotor Control and Adaptation

Distinct recruitment of dorsomedial and dorsolateral striatum erodes with extended training

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Vandaele, Youna, Mahajan, Nagaraj R, Ottenheimer, David J, Richard, Jocelyn M, Mysore, Shreesh P, Janak, Patricia H·2019·eLife

Abstract

Hypotheses of striatal orchestration of behavior ascribe distinct functions to striatal subregions, with the dorsolateral striatum (DLS) especially implicated in habitual and skilled performance. Thus neural activity patterns recorded from the DLS, but not the dorsomedial striatum (DMS), should be correlated with habitual and automatized performance. Here, we recorded DMS and DLS neural activity in rats during training in a task promoting habitual lever pressing. Despite improving performance across sessions, clear changes in corresponding neural activity patterns were not evident in DMS or DLS during early training. Although DMS and DLS activity patterns were distinct during early training, their activity was similar following extended training. Finally, performance after extended training was not associated with DMS disengagement, as would be predicted from prior work. These results suggest that behavioral sequences may continue to engage both striatal regions long after initial acquisition, when skilled performance is consolidated.

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  • Dichotomous control mechanisms, such as dorsomedial versus dorsolateral striatum and associative versus sensorimotor circuits, are supported by accumulating evidence.

    “Accumulating evidence supports dichotomous control mechanisms, such as “dorsomedial versus dorsolateral striatum” and “associative versus sensorimotor circuits“57,58.”

    From Dissociable roles of prefrontal plasticity in decision-making strategy and execution of habitual behavior (2026) · cites this paper as [58]

    The Introduction describes distinct proposed roles for the dorsomedial and dorsolateral striatum, and reports that they receive inputs from prefrontal versus sensorimotor cortices. But the paper’s Results and Discussion qualify a simple dichotomy: recruitment differs during early training, while the distinction erodes with extended training and both regions remain engaged. (LLM, conf=0.85)

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Authors
Vandaele, Y., Mahajan, N. R., Ottenheimer, D. J., Richard, J. M., Mysore, S. P., & Janak, P. H.
Affiliations
  • Johns Hopkins University (US)
  • University of Minnesota (US)
Corresponding author
  • Vandaele, Youna
  • Janak, Patricia H
Venue
eLife
Published
2019-10-17
Volume
8
ISSN
2050-084X (ISSN-L)
OpenAlex
W2980664548
Cited by
108
References
41
Citations by year
2026: 9 · 2025: 16 · 2024: 27 · 2023: 14 · 2022: 14 · 2021: 15 · 2020: 12 · 2019: 1
FWCI
6.11
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institute for Health Research (R01DA035943)
  • National Institute on Alcohol Abuse and Alcoholism (R01AA026306)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
Keywords
dorsomedial striatum, dorsolateral striatum, striatal subregions, habit formation, neural activity patterns, behavioral disengagement, skill consolidation, extended training
MeSH terms
Animals, Behavior, Animal, Corpus Striatum, Learning, Motion, Neurons, Physical Conditioning, Animal, Rats

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