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Neuronal Plasticity and Age-Related Functional Decline in the Motor Cortex
Ritsuko Inoue1, Hiroshi Nishimune1,2
1Laboratory of Neurobiology of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakaecho, Itabashi-ku, Tokyo 173-0015, Japan.
Cells
|September 8, 2023
Summary
Middle-aged mice show reduced neuronal activity in the motor cortex, indicating an early decline in motor function linked to the central nervous system. This highlights the role of motor cortex plasticity in age-related motor changes.
Area of Science:
- Neuroscience
- Aging Research
- Motor Control
Background:
- Physiological aging impairs motor function through various mechanisms, including motor cortex dysfunction.
- Motor function decline begins in middle age, primarily linked to central nervous system changes.
- Motor cortex plasticity, crucial for motor learning and function, is vital for interventions against age-related decline.
Purpose of the Study:
- To review the role of motor cortex plasticity in age-related motor function changes.
- To present findings on age-related decline in primary motor cortex neuronal activity in middle-aged mice.
Main Methods:
- Literature review on motor cortex plasticity and aging.
- Electrophysiological recordings from brain slices of middle-aged mice.
Main Results:
- Identified an age-related decline in neuronal activity within the primary motor cortex of middle-aged mice.
- Evidence suggests central nervous system mechanisms, specifically motor cortex changes, underlie middle-aged motor decline.
Conclusions:
- Motor cortex plasticity plays a significant role in maintaining motor function during aging.
- Early-stage age-related motor decline in middle age is associated with reduced neuronal activity in the motor cortex.
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