PSYC 1001 Lecture Notes - Lecture 4: Far-Sightedness, Visual Cortex, Acupuncture

• School: Carleton University
• Department: Psychology
• Course: PSYC 1001
• Professor: Bruce Tsuji

Document Summary

Bottom-up (from fingers to brains, eyes to brain, etc) Top-down (start at brain, goes to sensory organs) Transmitted up to brain, combined and assembled into patterns which can be perceived. Serial (only one or two at a time); perception. Helps find links between individual elements taken in by sensory receptors and link together. Absolute threshold: difference between not perceiving and just being able to perceive a stimulus. 1 tsp of sugar dissolved in 7. 6 litres of water. 1 drop of perfume in a 3-room house. Fly"s wing falling 1 cm on your cheek. Difference threshold: smallest increase or decrease in stimulus (same as jnd) Wwii and cold war research on radar detection. Ability to detect stimulus (absolute threshold): depends on more than physical intensity of stimulus. Make decisions about stimuli in presence of stimuli (when not sure) Radiology: tumour or not (if family member, criteria changes) Transduction: process by which sensory receptors convert stimulation into neural impulses.