motor area
Definition
Noun: * The region of the cerebral cortex primarily responsible for generating signals to direct voluntary muscle movements. It is a crucial part of the brain's motor system.
Usage
The term "motor area" is used in neuroscience, physiology, and medicine to specify the brain region that initiates and controls voluntary physical actions. It is often discussed in relation to movement planning, execution, and disorders affecting movement.
Examples
- Damage to the motor area in the left hemisphere can cause weakness or paralysis on the right side of the body.
- Neuroscientists mapped the motor area to show which parts control the fingers, lips, and toes.
- Electrical stimulation of the motor area during surgery can help surgeons avoid critical regions.
Advanced Usage
- Primary motor area (or Primary motor cortex): The specific subregion most directly involved in executing movements.
- Premotor area: A region anterior to the primary motor area involved in planning and coordinating complex movements.
- The concept is central to discussions of motor control, neuroplasticity (how the brain reorganizes after injury), and brain-computer interfaces.
Variants and Related Words
- Motor cortex: A more common synonym for the motor area, often used interchangeably.
- Rolando's area: An older anatomical term named after the scientist who described it.
- Precentral gyrus: The anatomical name for the ridge of brain tissue where the primary motor area is located.
Synonyms
- Motor cortex
- Motor strip (informal)
- Precentral gyrus (anatomical term)
Antonyms
- Sensory area: Cortical regions dedicated to processing sensory information (e.g., touch, sight, sound), as opposed to generating motor commands.
Noun
-
the cortical area that influences motor movements
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