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When you have certain experiences

We respond with various emotions

Stimulus responses

Just as this song is stimulus

It produces this sort of involuntary muscle response

Well, that's a rather simplified suggestion

Of a complex mental process

But you get the idea

Cause, effect

Nature endows us at birth with three

General patterns of emotional response

Rage is the response to the primary stimulus of thwarting

Something interfering with our behavior, our action

And the emotional response to love

Is usually the result of a show of affection or favorite

The primary stimulus of thwarting

Something interfering with our behavior, our actions

Fear is the response to loud noises

Or loss of support