PSY 1101 Lecture Notes - Lecture 4: Ultraviolet, Visual Cortex, Color Vision

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Gary Capstick

Document Summary

Sense organs, stimulus energy detection, transduction, transmission to brain. Packets of energy given off by all things, particularly things that are high in energy (e. g. , the sun) For example, x-rays, ultraviolet radiation, infrared radiation, microwaves, radio waves, light: what we call (cid:498)light(cid:499) is the portion of the spectrum that our eyes can detect. The greater the oscillation, the shorter the wavelength. The wavelength determines whether or not our eyes can detect it. Wavelength of light determines the hue that we will experience. Amplitude of the wavelength determines the brightness of the colour. Transduction is the conversion of one form of energy into another. 130 million rods and cones: mostly rods. Cones are concentrated in the centre of the retina (fovea) Rods increase visual sensitivity when in dim light. Axons from the ganglion cells converge and leave the eye on the nose side of the retina. There is a hole in your retina where there are no receptor cells.