书写认知老化发生机制及神经机理OA北大核心CHSSCDCSSCICSTPCD

Writing is a complex perceptual-motor process that involves both central cognitive coding and peripheral motor execution.It requires a lot of cognitive resources and is therefore susceptible to physiological aging.Research based on written products has found that older adults always show variations in font size,stroke inversions,reduced smoothness,and increased error rates.Studies on the writing process have revealed that older adults tend to show slower responses,increased pauses,prolonged execution,decreased speed,and uneven pen pressure.Cognitive aging in writing is primarily due to neurodegeneration of the brain,decline of sensory-motor mechanisms,and interference from hormonal changes or bone loss to hand movements.Future research should focus on the synchrony and asynchrony of aging in different writing processes,as well as the universality and specificity of cognitive aging in writing.Meanwhile,research should also be conducted to develop and apply clinical diagnostic criteria for cognitive aging in writing.