The cortical motor system.

Area of Science:

• Neuroscience
• Primate motor cortex research
• Higher cortical functions

Background:

• The primate cortical motor system comprises distinct areas.
• These areas are involved in motor control and higher-order functions.
• Traditionally, higher functions were attributed to associative cortical areas.

Purpose of the Study:

• To review higher functions of motor cortical areas.
• To discuss sensory-motor transformations, action understanding, and decision processing.
• To propose a central role for internal action representations.

Main Methods:

• Literature review of motor cortex functions.
• Analysis of sensory-motor transformations.
• Examination of action understanding mechanisms.
• Investigation of decision-making in action execution.

Main Results:

• Motor cortical areas perform sensory-motor transformations.
• These areas contribute to understanding actions.
• Motor areas are involved in decisions about executing actions.
• Internal action representations are central to motor function.

Conclusions:

• The motor cortex integrates sensory, cognitive, and motor functions.
• Internal action representations are fundamental to motor control.
• External and motivational factors influence action execution based on representations.