PSYC 100 Lecture Notes - Lecture 5: Subliminal Stimuli, Optic Nerve, Sensory Neuron
Document Summary
Bottom-up processing: taking sensory information and then assembling and integrating it. Top-down processing: using models, ideas, and expectations to interpret sensory information. Psychophysics: the field that studies the link between sensation and perception. Thresholds: the absolute threshold refers to the minimum level of stimulus intensity needed to detect a stimulus half of the time, anything below this threshold is considered subliminal . Subliminal perception: the registration of sensory input without conscious awareness, research suggest that subliminal stimuli may affect subtle phenomena, such as perceptions and attitudes. Sensory adaptation: reduced sensitivity in response to constant unchanging stimulation. Vision: energy, sensation and perception: we encounter waves of electromagnetic radiation, our eyes respond to some of these waves, our brain turns these energy wave sensations into colors. Light waves: wavelength-hue-color of visible light waves, amplitude-related to brightness of light waves, purity- related to saturation.
