PSYA01H3 Chapter Notes - Chapter 4: Subliminal Stimuli, Detection Theory, Color Blindness
Document Summary
Module 4. 1- sensation and perception at a glance. Sensation: the process of detecting external events by sense organs and turning those stimuli i(cid:374)to (cid:374)eural sig(cid:374)als. (cid:863) Perception: involves attending to organising, and interpreting stimuli that we sense. Recognizing and understanding raw sensory information (recognizing sounds and understanding certain colours, shapes and motion) Transduction: when specialised receptors transform the physical energy of the outside world into neural impulses. Neural impulses travel inside the brain, influence brain structures which give rise to our internal representation of the world. Transduction of light occurs when it reaches receptors at the back of the eye, convert this energy into nerve impulses which travel to brain centers where colour and motion are perceived and objects are identified. Doctrine of specific nerve energies: different senses are separated in the brain (proposed in. Change in the environment provides new info for the brain and processing this new info is useful for survival.
