PS261 Lecture Notes - Lecture 2: Reflex Arc, Habituation, Behavioral Neuroscience
Document Summary
Ethologists study the evolution of behaviour. Modal action patterns (maps) response sequences that are typical of a particular species. Dual process theory different underlying neural processes are responsible for increases and decreases in responsiveness to stimulation: habituation process produces decreases in responsiveness, sensitization process produces increases in responsiveness. They can happen at the same time the stronger one will dominate behaviour. The neural workings of the habituation and sensitization process. The habituation process happens in the s-r system (reflex arc) The se(cid:374)sitizatio(cid:374) pro(cid:272)ess happe(cid:374)s i(cid:374) the tate (cid:455)ste(cid:373) (deter(cid:373)i(cid:374)e the orga(cid:374)is(cid:373)"s general level of readiness to respond) Sensitization is not overly stimulus response: other functions in the nervous system can modify or influence the s-r system (state system) Using drugs to explain habituation: high vs crash (drunk vs hungover, drug tolerance decline in effectiveness of the drug after repeated exposure, experienced users vs non-experienced users. Primary process (a-process) initial emotion stimulates an opponent process (b process)
