The physiological essence of the emotion is to be found not in the visceral reflex actions, but in the high neural tension of the reflex centre which gives rise to these actions. In childhood ...

A reflex action follows this general sequence and does not involve the conscious part of the brain. This is why the response is so fast. Receptor in the skin detects a stimulus (the change in ...

A reflex action is a rapid automatic response to a stimulus (anything an organism can detect). Reflex actions are involuntary and do not necessarily involve the brain. Reflex actions protect the ...

The raised eyebrow, frown, smile, laugh and even the ability to speak may all have evolved from ancestral reflex actions that were gradually transformed into means of communication ...