This is why the response is so fast. Receptor in the skin detects a stimulus (the change in temperature). Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal ...
Sensory neurones carry electrical signals - nerve impulses - towards the central nervous system (spinal cord and brain). The signal starts in a receptor ... The neurone ends in either a muscle ...
When this receptor is overactivated, external sensory input is suppressed, and the brain generates more internally-driven images. "It's a bit like our brain is increasingly talking to itself ...