PSY1011 Chapter Notes - Chapter 3: Optic Nerve, Cerebral Cortex, Absolute Threshold
7 Aug 2018
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Document Summary
Messages from senses that make up raw information that affects behaviour and mental processes. Accessory structures modify the external energy from the environment: e. g. lens of eye focuses light waves, pinna collects and redirects sound waves. Receptors transduce energy into neural activity: occurs in neural receptors. Sensory nerves transfer neural activity to the cns. Thalamus processes and relays neural activity to relevant cerebral cortex. Cerebral cortex receives the input and produces the sensation and perception. Relationship between physical energy in environment and psychological experience of that energy. Minimum amount of stimulus energy that can be detected 50% of the time. Stimulation below this threshold is called subliminal stimulation. Stimulation above the threshold is called supraliminal stimulation. We(cid:271)er"s la(cid:449): just-noti(cid:272)ea(cid:271)le differe(cid:374)(cid:272)e = we(cid:271)er"s (cid:272)o(cid:374)sta(cid:374)t for spe(cid:272)ifi(cid:272) se(cid:374)se (cid:454) stimulus intensity. We(cid:271)er"s la(cid:449) does (cid:374)ot hold for (cid:448)er(cid:455) (cid:449)eak or (cid:448)er(cid:455) stro(cid:374)g sti(cid:373)uli. Recognition that depends on the stimuli received, and no prior knowledge or expectation.
