PSYCH 3313 Lecture Notes - Lecture 11: Scotopic Vision, Lacrimal Gland, Aqueous Humour
30 Sep 2016
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Document Summary
Background: visible spectrum: visible wavelengths: 400 800 nm, gamma rays radio waves. Electromagnetic radiation as a stimulus: stimulus for vision is light, light = moving waves of photons. Electromagnetic energy is abundant, travels quickly and in straight lines. Protecting the eye: located in bony orbit of the skull, cushioned by fat, eyelids/eyelashes/blinking, tears produced from lacrimal gland. Structures and functions of the eye: optical functions: capture light and form detailed spatial images, neural functions: transduce light into neural signals, then relay and process those signals, major structures of the eye. Cornea = outer surface of the eye; curved, transparent dome that initially bends incoming light. Aqueous humor of the anterior chamber = transparent, gelatinous mass that fills space from cornea to pupil. Iris = colored area; contains muscles that control the pupil. Pupil = black opening that lets light in. Lens = transparent disk that uses accommodation to focus light rays for near or far distances.
