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Ear movement induced by electrical cortical stimulation.

Lu Yu¹, Kiyohito Terada, Naotaka Usui

¹Department of Neurology, National Epilepsy Center, Shizuoka Institute of Epilepsy and Neurological Disorders, Aoi-ku, Shizuoka, Japan.

Epilepsy & Behavior : E&B

|July 17, 2010

Summary

This summary is machine-generated.

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Researchers identified a rare case of human ear auricle movement induced by electrical brain stimulation. This finding suggests previously unreported cortical control over ear movements in humans.

Area of Science:

Neuroscience
Human motor control
Epilepsy research

Background:

Cortical control of ear movement is not well-established in humans.
Presurgical evaluation for intractable epilepsy involves cortical mapping.
Electrical cortical stimulation is used to identify functional brain areas.

Observation:

A rare case of ear auricle movement was observed during extraoperative cortical stimulation.
A 21-year-old male patient with epilepsy underwent presurgical evaluation.
Subdural electrodes were placed on the right temporal and frontal regions.

Findings:

Tonic upward contraction of the left ear auricle was elicited.
Stimulation targeted the posterior superior temporal gyrus near the Sylvian fissure.

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No other motor or auditory symptoms were reported.

Implications:

This case suggests a potential human cortical area for ear movement control.
Understanding ear movement control may have implications for neurological studies.
Further research is needed to elucidate the mechanism of this phenomenon.