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bkydx t1_j8jfm2w wrote

Reply to comment by runawaycluetrain in The brain can rapidly detect and process fearful faces that are otherwise invisible to the eye. There appears to be a neural pathway for detection of fear, which operates automatically, outside of conscious awareness. by Wagamaga

Invisible is the correct term and just means "not perceptible by vision"

Your Amygdala is perceiving the "fear" and aware of the visual stimulus even if your conscious is not aware.

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runawaycluetrain t1_j8js05r wrote

Invisible means not in the visible range of the electromagnetic spectrum.

This concerns physics, not psychology or neurology.

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bkydx t1_j8juijt wrote

Thanks for being extra stupid while trying to sound smart but that isn't true.

X-rays/gamma rays/radio waves are not invisible to humans and they are part of the electromagnetic spectrum.

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