Loss of lever press-related firing of rat striatal forelimb neurons after repeated sessions in a lever pressing task
Open accessAbstract
Lateral striatal neurons that fire phasically in relation to active movement of the contralateral forelimb (determined via daily sensorimotor examination) were studied during acquisition of cued lever pressing. Rats were trained to lift the contralateral forepaw from the floor to press a lever in the presence of a tone. The tone was presented 70 times per day (session) for 18 consecutive days. All animals acquired the task, evidenced by gradual improvements across sessions and eventual asymptotic levels in tone discrimination, reaction time, and efficiency of the lever press. Forelimb neurons fired in relation to the lever press during early sessions of acquisition but not after repeated sessions on the task. This difference in firing could not be attributed to differences in forelimb movements during lever pressing or to sampling from different populations of neurons in early versus late sessions. In view of evidence that striatal damage impairs acquisition of motor skills, the change in firing suggests that the striatal activity present in early sessions may be necessary for the acquisition of, but not the automatic performance of, learned motor responses.
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In rats trained to lever-press to a tone, early in learning many sensorimotor striatal cells showed burst activity just before the lever press.
“Early in learning, many cells showed burst activity just before the lever press.”
From Cortical and basal ganglia contributions to habit learning and automaticity (2010) · cites this paper as [22]
After automaticity was well established, these sensorimotor striatal cells ceased responding altogether.
“In later sessions, presumably after automaticity was well established, the cells ceased responding altogether; that is, neither the tone nor the response elicited any activity from striatal”
From Cortical and basal ganglia contributions to habit learning and automaticity (2010) · cites this paper as [22]
The response of the sensorimotor striatum to extended training depends on the type of task used.
“On the other hand, there is evidence that the response of the sensorimotor striatum to extended training may depend on the type of task that is used.”
From Cortical and basal ganglia contributions to habit learning and automaticity (2010) · cites this paper as [22]
Later in training, similar striatal units fired bursts after the response had been made.
“Several days later, similar striatal units still fired bursts, but now the bursts came after the response had been made, and therefore they could not have played a role in response selection.”
From Cortical and basal ganglia contributions to habit learning and automaticity (2010) · cites this paper as [22]
In tasks with a single motor response, extended training leads to a decrease in the number of neurons within the sensorimotor striatum showing task-related activation.
“These studies have reported that extended training leads to a decrease in the number of neurons within the sensorimotor striatum showing task-related activation.”
From Cortical and basal ganglia contributions to habit learning and automaticity (2010) · cites this paper as [22]
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- Authors
- Carelli, R. M., Wolske, M., & West, M. O.
- Affiliations
- Rutgers, The State University of New Jersey (US)
- Venue
- The Journal of Neuroscience
- Publisher
- Society for Neuroscience
- Published
- 1997-03-01
- Volume
- 17
- Issue
- 5
- Pages
- 1804-1814
- ISSN
- 0270-6474 (ISSN-L)
- 1529-2401
- PMC
- PMC6573373
- OpenAlex
- W2120080362
- Cited by
- 114
- References
- 76
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 4 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 2 · 2018: 4 · 2017: 5 · 2016: 1 · 2015: 4 · 2014: 10 · 2013: 6 · 2012: 5
- FWCI
- 2.27
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Science Foundation (8708523)
- National Institute on Drug Abuse (DA04551)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Health Sciences › Medicine › Neurology › Neurological disorders and treatments
- Keywords
- striatum, forelimb movement, lever pressing, sensorimotor cortex, motor learning, tone discrimination, reaction time
- MeSH terms
- Acoustic Stimulation, Action Potentials, Animals, Conditioning, Operant, Corpus Striatum, Extinction, Psychological, Forelimb, Learning, Male, Neurons, Psychomotor Performance, Reaction Time, Rats
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