Sensorimotor integration and motor learning during a novel visuomotor tracing task in young adults with attention-deficit/hyperactivity disorder

Autor: Heather S. McCracken, Bernadette Murphy, Ushani Ambalavanar, Mahboobeh Zabihhosseinian, Paul C. Yielder
Rok vydání: 2023
Předmět:
Zdroj: Journal of Neurophysiology. 129:247-261
ISSN: 1522-1598
0022-3077
DOI: 10.1152/jn.00173.2022
Popis: Attention-Deficit/Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder that has noted alterations to motor performance and coordination, potentially affecting learning processes and the acquisition of motor skills. This work will provide insight into the role of altered neural processing and sensorimotor integration (SMI) while learning a novel visuomotor task in young adults with ADHD. This work compared adults with ADHD (n = 12) to neurotypical controls (n = 16), utilizing a novel visuomotor tracing task, where participants used their right-thumb to trace a sinusoidal waveform that varied in both frequency and amplitude. This learning paradigm was completed in pre, acquisition, and post blocks, where participants additionally returned and completed a retention and transfer test 24 hours later. Right median nerve short latency somatosensory evoked potentials (SEPs) were collected pre and post motor acquisition. Performance accuracy and variability improved at post and retention measures for both groups for both normalized (p0.001) and absolute (p0.001) performance scores. N18 SEP: increased in the ADHD group post motor learning and decreased in controls (p0.05). N20 SEP: increased in both groups post motor learning (p0.01). P25: increased in both groups post motor learning (p0.001). N24: increased for both groups at post measures (p0.05). N30: decreased in the ADHD group and increased in controls (p0.05). These findings suggest that there may be differences in cortico-cerebellar and prefrontal processing in response novel visuomotor tasks in those with ADHD.
Databáze: OpenAIRE
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