PSYC 1000 Lecture Notes - Lecture 3: Absolute Threshold, Wavelength, Retina

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1000
• Professor: Anneke Olthof

Document Summary

Diference threshold- smallest diference in 2 lights/ sounds based on brightness we can see/ sounds we can hear. Iris- band of muscles that controls the size of the pupil. Light goes all the way through the reina layers then bounces back before going to the opic nerve. Dark adaptaion- going from light to dark and being blind for a minute. Takes rods long to adapt to dark but can quickly become used to light. One cone talks to one bipolar cell to one ganglion cell. Many rods talk to single bipolar to single ganglion cell. If the occipital lobe is used frequently, more brain space is devoted to it. Listen to nerve cells of cat as it is simulated with images. Feature detectors: cells in the primary visual cortex that are very paricular about what will make them ire. Optic system- photoreceptors send signals to the brain. Auditory system- hair cells send signals to the brain.