Psychology 1000 Lecture Notes - Lecture 1: Opponent Process, Dual Process Theory, Visual Acuity

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Laura Reid

Document Summary

The stimuli: mechanical, thermal, or chemical energy applied to the surface of the skin. Cells in the nervous system are triggered by small areas on the body"s surface. Stimuli at centre have opposite effect of stimuli falling outside of the centre. Shows the relative size of the cortex devoted to various body parts. Spinal cord can block pain signals to the brain. Pain in the absence of physical causes (psychosomatic disorders) After losing a limb, patients report still feeling pain or burning sensations, even though they no longer have the body part. Pain receptors in the skin and tissue are absent. Importance of brain circuits in sensation and pain. Objects and surfaces in our environment absorb certain wavelengths of light, while reflecting other. Our visual system reacts to the reflected light waves. Refractive errors due to a curvature of the cornea. More prevalent in the ventral area of the retina (fovea)