About this item:

1,202 Views | 990 Downloads

Author Notes:

Correspondence: Linda Confalonieri; lindaconfalonieri@gmail.com

Acknowledgments: The authors gratefully thank the therapists, coordinators, and research assistants for invaluable work during data collection.

Subject:

Research Funding:

This study was sponsored by NCCAM R21 AT-002138-03 (AJB).

Brain Activation in Primary Motor and Somatosensory Cortices during Motor Imagery Correlates with Motor Imagery Ability in Stroke Patients

Tools:

Journal Title:

ISRN Neurology

Volume:

Volume 2012

Publisher:

, Pages 1-17

Type of Work:

Article | Final Publisher PDF

Abstract:

Aims. While studies on healthy subjects have shown a partial overlap between the motor execution and motor imagery neural circuits, few have investigated brain activity during motor imagery in stroke patients with hemiparesis. This work is aimed at examining similarities between motor imagery and execution in a group of stroke patients. Materials and Methods. Eleven patients were asked to perform a visuomotor tracking task by either physically or mentally tracking a sine wave force target using their thumb and index finger during fMRI scanning. MIQ-RS questionnaire has been administered. Results and Conclusion. Whole-brain analyses confirmed shared neural substrates between motor imagery and motor execution in bilateral premotor cortex, SMA, and in the contralesional inferior parietal lobule. Additional region of interest-based analyses revealed a negative correlation between kinaesthetic imagery ability and percentage BOLD change in areas 4p and 3a; higher imagery ability was associated with negative and lower percentage BOLD change in primary sensorimotor areas during motor imagery.

Copyright information:

© 2012 Linda Confalonieri et al.

This is an Open Access work distributed under the terms of the Creative Commons Attribution 3.0 Unported License (http://creativecommons.org/licenses/by/3.0/).

Creative Commons License

Export to EndNote