PSY100H1 Lecture Notes - Lecture 4: Ganglion, Prosopagnosia, Blauw-Wit Amsterdam

• School: UTSG
• Department: Psychology
• Course: PSY100H1
• Professor: Ashley Waggoner Denton

Document Summary

Psy100 lecture 4 sensation & vision. You do (cid:374)ot per(cid:272)ei(cid:448)e the (cid:449)orld (cid:858)as it is(cid:859). Absolute threshold: the minimum intensity of stimulation that must occur before you experience a sensation. Difference threshold: the just noticeable difference between two stimuli (the minimum amount of change required for a person to detect a difference) . Olfaction test: thousands of receptors, poorly understood, we are good at discrimination and good/bad judgements, but not at naming specific odours from scent alone, orbitofrontal cortex (ofc): Receives info from smell, taste, and visual systems. Touch: temperature, pressure & pain: mechanoreceptors: respond to mechanical distortion or pressure (the most sensitive mechanoreceptors are actually found in the cochlea responsible for sound transduction) If the gate is (cid:862)ope(cid:374)(cid:863) pain is experienced. If the gate is (cid:862)(cid:272)losed(cid:863) pain is reduced (or prevented) Vision: accommodation: muscles change the shape of the lens, flattening it to focus on distant objects, and thickening it to focus on closer objects.