PSC 1 Lecture Notes - Lecture 6: Cochlea, Basilar Membrane, Frontal Lobe
Document Summary
Psc 001 lecture 6 sensation & perception. Sensation: the se(cid:374)se o(cid:396)ga(cid:374)s" dete(cid:272)tio(cid:374) of e(cid:454)te(cid:396)(cid:374)al sti(cid:373)ulus, thei(cid:396) (cid:396)espo(cid:374)se, & the transmission of these responses to the brain. Perception: the (cid:271)(cid:396)ai(cid:374)"s p(cid:396)o(cid:272)essi(cid:374)g, o(cid:396)ga(cid:374)izatio(cid:374), & i(cid:374)te(cid:396)p(cid:396)etatio(cid:374) of se(cid:374)so(cid:396)(cid:455) signals; results in internal representations of the stimuli that form a conscious experience of the world. The brain cannot process physical stimuli directly, so stimuli have to be translated into chemical and electrical signals. Transduction: a process by which sensory receptors produce neural impulses when they receive physical or chemical stimulation. Sensory receptors: specialized receptor cells that detect specific physical or chemical stimulation; pass the resulting impulses to connecting neurons. Connecting neurons transmit information to the brain, usually the thalamus. The thalamus sends the information to the primary sensory cortex, where impulse is interpreted. Qualitative information: basic qualities of a stimulus. Receptors respond by firing in different combinations. Receptors respond by firing at different rates.
