PS 101 Lecture Notes - Lecture 4: Absolute Threshold, Color Vision, Retina

• School: Quinnipiac University
• Department: Psychology
• Course: PS 101
• Professor: Michaud, S

Document Summary

Sensation: the process by which our sensory receptors and nervous system receive and represent a stimulus energy from our environment. Perception: the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events. The a(cid:374)alysis that (cid:271)egi(cid:374)s (cid:449)ith the se(cid:374)se re(cid:272)eptors a(cid:374)d (cid:449)orks up to the (cid:271)rai(cid:374)"s integration of sensory information. Information processing guided by higher level mental processes. As when we construct perceptions drawing on our experience and expectations. Minimum stimulation needed to detect a particular stimulus. Usually defined as the stimulus needed for detection 50% of the time. For a difference to be perceived, two stimuli must differ by a constant minimum percentage. The distance from the peak of one wave to the peak of the next. Dimension of color determined by wavelength of light. Amount of energy in a wave determined by amplitude. The pro(cid:272)ess (cid:271)y (cid:449)hi(cid:272)h the eye"s le(cid:374)s (cid:272)ha(cid:374)ges shape to fo(cid:272)us the i(cid:373)age of o(cid:271)je(cid:272)ts o(cid:374) the retina.