Psychology 2015A/B Lecture Notes - Lecture 8: Sensory Nerve, Amygdala, Haptic Perception

• School: Western University
• Department: Psychology
• Course: Psychology 2015A/B
• Professor: John Campbell

Document Summary

Three parts: cutaneous senses: perception of touch and pain from stimulation of the skin, proprioception: ability to sense position of the body and limbs, kinesthesis: ability to sense movement of body and limbs. Something we are constantly doing: do(cid:374)"t k(cid:374)o(cid:449) ho(cid:449) i(cid:373)porta(cid:374)t it is u(cid:374)til (cid:449)e lose it. Four key receptors utilized when perceiving touch sensations. Two major pathways from spinal cord --> brain: medial lemniscal pathway consists of large fibers that carry proprioceptive and touch information, high speed, spinothalamic pathway consists of smaller fibers that carry temperature and pain information. Two major pathways in the spinal cord: give information from the skin to the brain. These pathways cross over to the opposite side of the body and synapse in the ventrolateral nucleus in the thalamus: thalamus - part of the limbic system. Signals travel from the thalamus to the somatosensory receiving area (s1) and the secondary receiving area (s2) in the parietal lobe.