Psyc4130 1nd Edition Lecture 11 Outline of Last Lecture I. Capgras DelusionII. Temporal Lobe EpilepsyIII. Kulver-Bucy Syndrome IV. Diencephalona. Hypothalamusb. Hypo-pituitaryc. Thalamus V. Brain StemOutline of Current Lecture II. Neuroantomy Continued… (ch 3)a. Forebraini. Pons and Medullaii. CerebellumIII. Vision (ch 6)a. Rainbow of wavelengthb. Photonsc. PhotoreceptorsCurrent LectureAnatomy Vision (Ch 6- READ FOR NEXT TEXT) Neuro Anatomy Ch 3 continued… Forebrain- Brainstem = midbrain and hindbraino 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 wavelengtho Red 700 nm, orange 600 nm, green 500 nm, purple 400 nmo Wavelengths are interpreted by neural signals in retina by temporal lobeo 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- Photonso 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 nerveo 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 creatureso Humans evaluate things quickly through their sense of vision- Photoreceptorso 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
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