PSYC 2390 Chapter Notes - Chapter 2: Ganglion Cell, Resting Potential, Absorption Spectroscopy
22 Mar 2016
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Document Summary
Ability to see an object depends on informaion contained in light relected from that object back into our eye. Light: the simulus for vision: vision is based on visible light, a band of energy within the electromagneic spectrum. A coninuum of electromagneic energy that is produced by electrical charges and is radiated as waves: wavelength. Visible light: energy within the electromagneic spectrum that humans can perceive, wavelengths are associated with colour. Short wavelength(blue) to long wavelength (red: usually specify light as waves, but can be described as small packets of energy (photons) The eye: contain receptors for vision, pupil. Rods and cons: contain light-sensiive chemicals called visual pigments. React to light and trigger electrical signals: opic nerve. Where signals triggered by the receptors exit the back of the eye: eye creates 2 transformaions. Transformaion from light relected from an object into an image of the object.
