Related Experiment Videos
Motivation-dependent responses in the human caudate nucleus
M R Delgado1, V A Stenger, J A Fiez
1Department of Psychology, New York University, New York, NY 10003, USA. m.delgado@nyu.edu
Cerebral Cortex (New York, N.Y. : 1991)
|April 30, 2004
Summary
The caudate nucleus, part of the basal ganglia, shows altered activity based on motivational context. This brain region
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Behavioral Neuroscience
Background:
- The basal ganglia are crucial for motivation and behavior control.
- The striatum processes reward information, distinguishing between rewards and punishments.
- The caudate nucleus's response to shifting motivational contexts remains unclear.
Purpose of the Study:
- To investigate how the caudate nucleus activity changes with varying motivational contexts.
- To explore the role of the caudate nucleus in affective processing during tasks with different incentive levels.
Main Methods:
- An event-related fMRI design was employed.
- Participants guessed card values, receiving positive/negative feedback.
- Motivational context was manipulated between high-incentive (monetary feedback) and low-incentive (accuracy feedback) periods.
Main Results:
- Caudate nucleus activity was significantly modulated by incentive periods.
- A larger hemodynamic response was observed at trial onset during high incentive periods.
- Greater differences in caudate nucleus activity between positive and negative feedback occurred during high incentive periods.
Conclusions:
- Motivational context changes can modulate basal ganglia activity.
- The caudate nucleus plays a significant role in processing affective information.
- Findings support the caudate nucleus's involvement in motivation-driven behavior.