PSYCH 111 Lecture Notes - Lecture 6: Neural Adaptation, Absolute Threshold, Psych

• School: U of M
• Department: Psychology
• Course: PSYCH 111
• Professor: Marion Perlmutter

Document Summary

Senses (vision, hearing, smell, taste, touch: ti(cid:373)ulus leads to the feeli(cid:374)g of se(cid:374)satio(cid:374) (cid:271)efore e(cid:374)teri(cid:374)g (cid:373)i(cid:374)d, per(cid:272)eptio(cid:374) o(cid:272)(cid:272)urs right (cid:449)he(cid:374) it e(cid:374)ters the mind, these thi(cid:374)gs together all lead to a respo(cid:374)se, the r& (cid:272)(cid:455)(cid:272)le goes i(cid:374) a (cid:272)ir(cid:272)le. Sensation is the detection of energy in the environment and its conversion to a neural impulse. Perception is the representation, organization, and interpretation of information in the brain. Beha(cid:448)ioral (cid:373)odel deals (cid:449)ith the (cid:373)i(cid:374)d as (cid:862)a (cid:271)la(cid:272)k (cid:271)o(cid:454)(cid:863) Bottom-up processing: data and world driven; assembles and integrates sensory i(cid:374)for(cid:373)atio(cid:374) (cid:894)(cid:862)(cid:449)hat is out there? (cid:863)(cid:895) Top-down processing: knowledge and mind driven; cognitive models and expectancies to i(cid:374)terpret se(cid:374)sor(cid:455) i(cid:374)for(cid:373)atio(cid:374) (cid:894)(cid:862)(cid:449)hat do (cid:455)ou k(cid:374)o(cid:449)? (cid:863)(cid:895) Operationalized by saying if at 50% detected, it is at the absolute threshold in studies. What affects detection of stimuli? detection=sensory process + decision. Just noticeable difference is the smallest difference detected. We(cid:271)er"s law says that there is more stimulation needed for detection (positive correlation)