When people fake a smile, the orbicularis oculi doesn't activate. That's because it's an involuntary muscle that's controlled by the limbic system, or the emotional center of the brain. By contrast, the zygomatic major is controlled by the motor cortex. It activates both spontaneously and voluntarily.
When people fake a smile, the orbicularis oculi doesn't activate. That's because it's an involuntary muscle that's controlled by the limbic system, or the emotional center of the brain.
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Hi Unnie:-
When people fake a smile, the orbicularis oculi doesn't activate. That's because it's an involuntary muscle that's controlled by the limbic system, or the emotional center of the brain. By contrast, the zygomatic major is controlled by the motor cortex. It activates both spontaneously and voluntarily.
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Answer:
Explanation:
When people fake a smile, the orbicularis oculi doesn't activate. That's because it's an involuntary muscle that's controlled by the limbic system, or the emotional center of the brain.