Examining the Role of the Primary Motor Cortex in Motor Equivalence

Date
2015-04-14
Authors
Schmitz, Mathew
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Altmetrics
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Kinesiology
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Kinesiology
Abstract

The primary motor cortex provides the final descending motor command. However, little is known regarding how sensory information influences activation of this brain region. The purpose of this case study was to examine if varying sensory information changes the brain activity associated with a simple finger movement. Electroencephalography (EEG) was recorded while a trained musician played either the guitar or mandolin. The musician was instructed to play one note, using a simple finger pick and the same fingering for each instrument (i.e. motor equivalency). Thus, only sensory information related to holding the instrument and sound of the instrument was modified. Brain activity over the primary motor cortex will be normalized to rest and compared between instrument conditions. We hypothesize that since the function of the primary motor cortex is to send the final motor command (i.e. not sensory integration), brain activity over this area will not differ between instrument conditions. Results of this study provide the basis for further research examining the contribution of the primary motor cortex in motor equivalency

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