Psychology 1000 Chapter Notes - Chapter 3: Occipital Lobe, Agnosia, Neurogenesis

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Chapter 3 - biological foundations of behaviour/the nervous system. Neural basis of behaviour: to understand how the brain controls behaviour, we must understand how its individual parts and cells work and how they interact with each other. Neurons: neurons are the basic building blocks of the nervous system. Support neurons and hold them in place, outnumber neurons about 10-1: also transport nutrients, form myelin sheath and absorb dangerous toxins, form the blood brain barrier to keep out toxins. Electrical activity of neurons: neurons generate electricity and release chemicals that help them communicate with muscles, glands and other neurons, conduct electricity through action potentials. In fluid outside neuron, high [na+] and [cl-], and inside neuron, high [protein a-] and [k+: results in uneven distribution of charges creating a resting potential of -70 millivolts. Sudden reversal in neurons voltage (cid:862)all or (cid:374)o(cid:374)e(cid:863) pri(cid:374)(cid:272)iple (cid:373)ust (cid:271)e e(cid:374)ough (cid:448)oltage (cid:272)ha(cid:374)ge to rea(cid:272)h ap (cid:894)-50mv) or a graded potential will occur.