Lec 3-3

Question 1

Reafference vs exafference

Answer 1

Reafference is sensory info generated from your own movements

Exafference is sensory info generated from external stimuli unrelated to your movements

Question 2

What does the vestibular system detect, what does this tell you

Answer 2

Linear and angular accel of the head, this tells you your orientation in reference to gravity and gives you balance

Question 3

why can’t you tickle yourself

Answer 3

Sensory cancellation: suppress sensory effects when your prediction matches the sensation. You send prediction about how tickling will feel, this reduces the effect.

You are more sensitive to exafferent stimuli