Mirror-neuron system recruitment by action observation: Effects of focal brain damage on mu suppression

Citation:

S., Frenkel-Toledo, Bentin S., Perry A., Liebermann D.G., and Soroker N. “Mirror-neuron system recruitment by action observation: Effects of focal brain damage on mu suppression.” NeuroImage 87 (2014): 127 - 137.

Abstract:

Mu suppression is the attenuation of EEG power in the alpha frequency range (8-12Hz), recorded over the sensorimotor cortex during execution and observation of motor actions. Based on this dual characteristic mu suppression is thought to signalize activation of a human analogue of the mirror neuron system (MNS) found in macaque monkeys. However, much uncertainty remains concerning its specificity and full significance. To further explore the hypothesized relationship between mu suppression and MNS activation, we investigated how it is affected by damage to cortical regions, including areas where the MNS is thought to reside. EEG was recorded in 33 first-event stroke patients during observation of video clips showing reaching and grasping hand movements. We examined the modulation of EEG oscillations at central and occipital sites, and analyzed separately the lower (8-10Hz) and higher (10-12Hz) segments of the alpha/mu range. Suppression was determined relative to observation of a non-

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Last updated on 01/02/2018