PSYCH 101 Lecture 11: Psych 101 lecture 1_25 Sensation and Perception cont

• School: UW
• Department: Psychology
• Course: PSYCH 101
• Professor: Ann Culligan

Document Summary

Ps(cid:455)(cid:272)h (cid:1005)(cid:1004)(cid:1005) le(cid:272)ture ja(cid:374) (cid:1006)5 e(cid:374)satio(cid:374) a(cid:374)d per(cid:272)eptio(cid:374) (cid:272)o(cid:374)t"d. Perception: organization of sensory information into cognitive awareness of environmental stimuli. If there"s a(cid:374) illustratio(cid:374) of a field of dark blobs. Your eyes see the dark/light variations of this illustration. You perceive a field of dark blobs. Begins with receptors and works up to integration: top-down processing. Understanding stimuli based on prior experience and expectations. The (cid:271)rai(cid:374) will rapidl(cid:455) i(cid:374)terpret sti(cid:373)uli (cid:271)ased o(cid:374) their (cid:862)(cid:373)ost likel(cid:455)(cid:863) e(cid:454)pla(cid:374)atio(cid:374: these overlap! Minimum stimulation needed to detect a stimulus 50% of the time. Ex: whisper (cid:862)su(cid:271)li(cid:373)i(cid:374)al sti(cid:373)uli(cid:863) are u(cid:374)der the threshold. Minimum difference between two stimuli that can be detected. We(cid:271)er"s law: the jnd of a stimulus is a constant proportion of the stimulus, regardless of the intensity of the stimulus. Sensory adaptation: diminished sensitivity to a continuous stimulus. Vision: stimulus: visible light, properties of light waves: Iris: colored muscle that responds to light information. Pupil: is a hole (with cornea over it)