Functional MR imaging: from the BOLD effect to higher motor cognition

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Motor Control

Background:

• The human motor system is complex, involving multiple brain regions.
• Higher motor disorders present significant challenges in understanding their underlying pathophysiology.
• Functional imaging techniques offer novel insights into brain function during motor tasks.

Purpose of the Study:

• To review the contributions of functional imaging to understanding the human motor system.
• To explore the role of functional magnetic resonance imaging (fMRI) in motor neuroscience.
• To discuss the implications of functional imaging and lesion data for higher motor disorders.

Main Methods:

• Review of functional imaging literature, focusing on fMRI.
• Highlighting core aspects of the human motor system, including nonprimary motor areas, the mirror neuron system, and intraparietal multimodal cortex.
• Synthesizing findings from functional imaging with neurological data from patients with motor system lesions.

Main Results:

• Functional imaging has elucidated the roles of multiple nonprimary motor areas.
• The mirror neuron system and intraparietal multimodal cortex are crucial for motor processing.
• Convergence of imaging and lesion data refines our understanding of motor system pathophysiology.

Conclusions:

• Functional imaging is indispensable for mapping brain activity in the motor system.
• Integrating imaging with lesion studies provides a comprehensive view of motor control and disorders.
• This approach advances our knowledge of the pathophysiology of higher motor disorders.