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UNC-Chapel Hill PSYC 101 - Temporal Lobe

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Psych 10 1nd Edition Lecture 6 Outline of Last Lecture Central Nervous SystemI. Peripheral Nervous SystemII. The Nerve CellIII. Parts of the NeuronIV. Transmission of neural informationV. Parts of the NeuronVI. The Nerve CellOutline of Current Lecture II. Temporal Lobe II. Fusiform Gyrus III. Prosopagnosia IV. AphasiaV. Broca’sVI. Wernicke’sVII. Corpus CollusomVIII. SensationIX. VisionX. Parts of the eyeCurrent Lecture- Temporal Lobe: auditory processing. Fusiform Gyrus: brain used in identifying faces. I. Some degree of specialization in processing information. - *Prosopagnosia: inability to recognize faces. Damaged Fusiform Gyrus. Language and the brain- Aphasia: Difficulty in producing or expressing speech.- *Broca’s area (involved in “expressive aphsia”)Articulate & talk properly. Poor grammar. Organizing speech.- *Wernicke’s area (involved in “receptive aphasia)Understanding verbal speech. Hemisphere Specialization- Corpus Collusom: connection between the two hemispheres. Ex: Bridge- The concept of “Contralaterality”:Functions on one side of the body is affected by the opposite hemisphere. The left hemisphere manages the motor control on the right side of the body. - Left Hemisphere: -Language and verbal abilities.- Right Hemisphere: -Spatial and contextual skills. - “Split Brain Patients”: - Flash object to:- left sees from right eye- right sees from left eyeStudying the Brain- Analyzing the brains of the deceased- Lesion or stimulate parts of the brain- Looking at the behavior of individuals with damage to part of the brain.- CAT- fMRI (function): looks at what parts of the brain is using more oxygen. SensationDefinition: The ability to detect and encode information from the environment. The eyeor ear. Perception: The ability to organize and interpret information from the environment. Ex:Seeing a fire and running from it. Making sense of your sensory information.Transduction: The process of converting a physical or chemical process in a nerve impulse. Environment language into neural impulse. Sensation: “Bottom-up”(body; sensory) processing. You experience things. Perception: “Top-down” (head) processing. Your interpretation of it. The use of brain- Clinical example: Hallucination versus delusions. Delusions are faulty interpretationof things. Vision- Visible radiation: -Wavelength: The number of cycle in a given radiation that occur in a specific periodof time. Measured in nanometers. -Height of the wave= amplitude: the amount of energy or intensity in the wavelength. Ex: Taller the ocean wave the more water it has.Parts of the eyeCornea: Lens focuses light in the back of the retina.Retina: Far sighted when people only see from far away.Near sighted when people only see that are close-up. Specialize photoreceptors in the eye in the retina that convert high energy into neuralactivities. *Cones: Found in the central part of the retina; get activated by diff types of wavelength. *Rod: DARK CONDITIONS/Periphery outside of the retina.Color vision Based on “additive” color mixingTwo major theories of color vision:Young-Helmholts trichromatic theoryOpponent Process


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