PSY 102 Lecture Notes - Lecture 3: Magnetic Resonance Imaging, Reticular Formation, Radiography
Document Summary
Biological psychologists/neuroscientists: researchers who study relationship between nervous system and behaviour. Synaptic vesicle: sac containing neurotransmitters - like gel capsules, exterior dissolves and insides come out. Neurotransmitter: chemical messengers that neurons use to communicate with each other (cid:314) synapse: gap between neurons where nts travel. Glial (glue) cells plentiful in brain (1:1 ratio with neurons) 3. 2: describe electrical responses of neurons and what makes them possible. neurons respond to neurotransmitters by generating electrical activity electrical responses depend on uneven distribution of charged particles across membrane surrounding neuron. Restng potential: when there are no nts acting on neuron, more negative particles inside than outside neuron, particles of both types flowing in and out of membrane. Action potential, when there is enough charge inside neuron = threshold = electrical impulse created called action potential: waves of electrical discharge triggered by change in charge inside neuron.
