Psyc4130 1nd Edition Lecture 11 Outline of Last Lecture I Capgras Delusion II Temporal Lobe Epilepsy III IV V Kulver Bucy Syndrome Diencephalon a Hypothalamus b Hypo pituitary c Thalamus Brain Stem Outline of Current Lecture II Neuroantomy Continued ch 3 a Forebrain i Pons and Medulla ii Cerebellum III Vision ch 6 a Rainbow of wavelength b Photons c Photoreceptors Current Lecture Anatomy Vision Ch 6 READ FOR NEXT TEXT Neuro Anatomy Ch 3 continued Forebrain Brainstem midbrain and hindbrain o Pons and medulla continuation of spinal cord mediate heart rate breathing regurgitation vital reflexes Area postrema chemical trigger zone vomiting center of brain will search blood for toxins so will ake you vomit to get rid of toxins when at dangerous levels i e too much alcohol Reticular formation Raphe nuclei 5HT Locus Coeruleus NE These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute o Cerebellum About 60 70 of neurons in CNS are in cerebellum Posture balance coordination timing rhythm sense of sight sense of hearing position of body motor signals Attention cocktail party effect Highly wrinkled folded Chapter 6 Vision Rainbow of wavelength o Red 700 nm orange 600 nm green 500 nm purple 400 nm o Wavelengths are interpreted by neural signals in retina by temporal lobe o 3 different types of cones in our eyes mammals only have 2 lack a type of cone can t distinguish as much of spectrum as humans o The primate visual system is elaborately designed around the representation of color information Survival is dependent on nuances of color changes Photons o Transduction Translation process of environmental stimulus that is seen by body light mechanical waves RETINA in the back part rear portion The retina is actually CNS tissue considered part of the brain Rods and cones don t have axons they don t create action potentials to the manic depressive cells bipolar cells these generate AP Ganglion cells are output cells of retina Axons of ganglion cells optic nerve o Coding o Decoding Especially occurs at widely varying degrees of complexity across the 30 or so visual areas of the human brain In general o Primates are intensely visual creatures o Humans evaluate things quickly through their sense of vision Photoreceptors o Cones Require bright light are wavelength sensitive are concentrated in the fovea the central aspect of the retina May only connect to one bipolar cell Very specific info o Rods Have much lower activation thresholds good at detecting MOTION not at detecting color form or shape Concentrated outside of retina Fields of 50 100 rods that are converging on one bipolar cell because they help with very fine detail
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