PSYC 1001 1st Edition Lecture 23 Outline of Last Lecture I. Signal Detection TheoryII. Difference Thresholda. Weber’s Lawb. Subliminal Stimulation Outline of Current Lecture I. Exam 3a. The sensesi. TransductionCurrent LectureI. The sensesa. Energy= Receptor= Brain= ExperienceII. Visual Sensea. Most studied sensei. Usual stimulus: Light (wavelength and particles)1. Amplitude: Height of wavelength.a. Related to brightness (how we perceive light).ii. Higher amp+ Brighter colors and louder.1. Wavelength: Distance from one wave to another.a. Related to color.iii. Transduction: Conversion of one form of energy into another.1. In sensation: Transformation of the stimulus’ energy into neural signals.iv. Eye= Light enters the cornea (transparent outer covering of front of the eye) through the pupil (adjustable hole in the iris). 1. An iris regulates the amount of light entering and it is a ring of muscle.2. A pupil contracts with bright light.3. Pupil size also affected by sympathetic nervous system).4. Pupil size also affected by the sympathetic nervous system.a. Involved with emotion and arousal. b. Example: Sympathetic nervous system= Mean streets of Boulder.v. Light is focused by the lens. These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.vi. Eye is filled with fluid (jelly like).vii. Floaters: Bits of material in the eye that casts a shadow on the
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