Related Experiment Videos
Striatal recruitment during an implicit sequence learning task as measured by functional magnetic resonance imaging
S L Rauch1, P J Whalen, C R Savage
1Massachusetts General Hospital and Harvard Medical School, Boston 02114, USA. rauch@psych.mgh.harvard.edu
Human Brain Mapping
|January 1, 1997
Summary
This study used fMRI to investigate implicit sequence learning, finding right-sided striatal activation, particularly in the putamen, though individual differences exist.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Neuroimaging
Background:
- The striatum is implicated in implicit sequence learning.
- Previous neuroimaging studies have yielded inconclusive results regarding specific striatal sub-regions and laterality.
Purpose of the Study:
- To investigate brain activation patterns during implicit sequence learning using fMRI.
- To clarify the role of striatal sub-territories and laterality in this process.
Main Methods:
- Functional magnetic resonance imaging (fMRI) was employed.
- Ten healthy right-handed males performed the serial reaction time task (SRT).
- Behavioral data assessed implicit learning and explicit knowledge.
Main Results:
- Significant implicit learning was confirmed behaviorally.
- fMRI revealed right-lateralized activation in the caudate and putamen across the cohort.
- Individual analyses showed variability, but robust learning correlated with putamen activation.
Conclusions:
- Implicit sequence learning involves right-sided striatal activation, predominantly the putamen.
- Inter-individual variability exists in the precise brain regions and laterality involved.
- Putamen activity magnitude correlates with learning-induced reaction time improvements.