PSYC 221 Lecture Notes - Lecture 3: Diffusion Mri, Agnosia, Parallel Computing
Document Summary
Interior of nerve cell is a negative charge, outside is a positive charge. Some substances interfere with the functions of neurotransmitters. Early microscopes not good enough to tell: golgi invented a new staining technique to stain only 1% of the neurons in the brain. To look at individual neurons from beginning to end: ramon y cajal refined the technique. Used newborn animal brains with fewer neurons, easier to stain. Nerve cell has body (with nucleus), dendrites (receive signal), axon (send signal) Communicate through nts that one neuron releases and the other accepts. Directionality of flow through axon to the next cell. Types of neurons: types of receptor neurons for different purposes, vision (rods and cones , hearing (in ear, smell, taste, touch. Brain imaging techniques: allow us to get a picture/moving picture of brain activity, mri , ct static image. Structure not function of brain: event related potentials. Non invasive hat with many probes that rest on skin.
