PSYC 2307 Lecture Notes - Lecture 7: William H. Calvin, Neural Coding

• School: Carleton University
• Department: Psychology
• Course: PSYC 2307
• Professor: Brian Tansley

Document Summary

Communication between neurons psyc2307: william calvin: modern view of neuronal computation will be complicated until neurons are more clearly established. Output synapse are sometimes an elementary computing unit: all info is carried by action potentials, but not all action potentials carry information. The other 70-80% is reserved for the rest of our body: there is only ever enough atp available to run 2-3% of the (cid:272)orte(cid:454) at (cid:858)full stea(cid:373)(cid:859). [studies ha(cid:448)e sho(cid:449)(cid:374) that this is(cid:374)(cid:859)t al(cid:449)a(cid:455)s true]. For this (cid:272)lass, a(cid:272)(cid:272)ept that this law is true. It is done through integration of epsps and ipsps. To save energy, it makes sense to keep things sparse: epsp: an excitatory depolarization of the postsynaptic membrane of a synapse causd by the liberation of a neurotransmitter by the presynaptic terminal button. Ipsp: an inhibitory hyperpolarization of the post synaptic membrane of a synapse caused by the liberation of an nt by the presynaptic terminal button: neurons code signals to create information.