NEUR 1201 Lecture Notes - Lecture 5: David H. Hubel, Psychophysics, Visual Processing

• School: Carleton University
• Department: Neuroscience
• Course: NEUR 1201
• Professor: Matthew Holahan

Document Summary

Perception interpretation of sensory information based in part on previous experiences. Doctrine of specific nerve energy sensory receptors are specialized to absorb a particular type of energy sensory receptors have different neural pathways. How we perceive the world (perception) brain automatically perceives the information it receives from the sense organs bottom-up processing versus top down processing. Link between physical properties of stimuli and a persons experience of stimuli (sensation-perception) sensation begins with a detectable stimulus. Gustave fechner: the concept of the threshold. Absolute thresholds environment is seldom ideal, noise is an irrelevant and competing stimulus. Subliminal perception individuals can detect information that is below the level of conscious awareness. Fowler et al. (1981) presented words subliminally (e. g. , lodge) asked which of two words was most like subliminal word (e. g. , hotel or book) results: usually picked correct word no evidence subliminal perception affects conscious thoughts and behaviour.