Definition

Noun: - The cortical area that influences motor movements: An "excitable area" refers to a specific region of the cerebral cortex in the brain. When electrically stimulated, this area can elicit or influence physical motor movements in the body.

Usage

• The term is used in neuroscience, physiology, and medicine to describe brain regions directly involved in motor control.
• It is a technical, compound noun. The primary meaning is the one provided in the definition.

Examples

Advanced Usage

• The concept is foundational in brain mapping and understanding the motor homunculus, which is a distorted representation of the body within the primary motor cortex (a key excitable area).
• Research into neuroplasticity examines how the size or function of an excitable area can change following injury or with training.

Variants and Related Words

• Motor cortex: A more common term for the primary excitable area controlling voluntary movements.
• Primary motor cortex (M1): The main region designated as an excitable area.
• Premotor cortex: An adjacent cortical area involved in planning movements, also considered excitable.
• Cortical stimulation: The technique used to identify an excitable area.

Synonyms

• Motor area
• Motor strip (informal)
• Rolandic area (historical term, after the central sulcus of Rolando)

Notes on Meaning

• This is a specialized scientific term with a single, precise meaning. It does not have common idiomatic or figurative uses.
• The word "excitable" here is used in its physiological sense, meaning "capable of responding to a stimulus," not in the everyday emotional sense of "easily excited."

Noun

1. the cortical area that influences motor movements