PNB 2XB3 Lecture Notes - Lecture 4: Lamellar Corpuscle, Dorsal Root Ganglion, Posterior Grey Column

• School: McMaster University
• Department: Psychology, Neuroscience & Behaviour
• Course: PNB 2XB3
• Professor: Daniel Goldreich

Document Summary

4/5: v0= mv of membrane at beginning of synapse (given) (amplitude of epsp, add vt mv to mv peak. Dermatomes: )o(cid:374)e of the ski(cid:374)"s (cid:374)er(cid:448)es that enters specific spinal segments, cervical, thoracic, lumbar, sacral, action potentials enter the spinal cord at these segments. Spinal cord: gray matter: cell bodies, dendrites, white matter: myelinated axons, shape and size of dorsal and ventral horns vary in segments of the spinal cord, has to do with fine motor control, dorsal horns- sensory, ventral- motor. First (sharp) and second (duller, burning) pain: do(cid:374)"t de(cid:448)elop (cid:272)o(cid:374)s(cid:272)ious a(cid:449)are(cid:374)ess of pai(cid:374) (cid:894)e(cid:454). Brown-sequard syndrome: lesion on the left half of the brain. Infer this neuron is connected to a cell type at one apart of the skin. Stimulus-response spike trains: dynamic phase- fire frequently, static phase- not firing as frequently, slowly adapting (merkel, ruffini, rapidly adapting (meissner, pacinian)