ANAT 321.docx - Midterm 1: Oct. 18th about 20 questions,...

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Midterm 1: Oct. 18thabout 20 questions, 18-19 mc & 1-2 short answers (20%)Midterm 2: Nov 8th(20%)Read Montague- computational neuroscience“ our mind is the pattern of information processing running on a special kind of machine: ourbrain… its information processing all the way down and all the way up”-How can out brain make decisions?
what we need to understand, what kind of information processing machineis the brain… how does it do all this?
September 3rd, 2021Sensory information has four main functions1.Perceptiona.Use information about external world to guide behaviour and actionb.“seeing” the world, ex: seeing a blue sky2.Control of movementa.Depends of complex sensory inputs, initial inputs and constant3.Regulation of the function of internal organsa.Autonomic nervous system, sympathetic & parasympathetic also need sensoryinput4.Maintenance of arousala.Fall asleep, hear a loud noise you wake upCommon properties of Sensations-Modality: quality of a stimulus (vision, auditory, somatosensory)oSub-modality: components of modality (somatosensory: pressure, temperature,pain)-Intensity-DurationoSensory system do not detect duration, evolved to detect changesoEx: feeling clothes when you first put them on-LocationoSomatosensory system, visual system can detect locationoOlfactory system cannot locate things wellSomatic sensory system-Encodes sensory information about the skin surface (touch, vibration, sensory, pain…)and sensory information from inside the body (visceral pain)-Dorsal column-medial lemniscal pathwayoFine touch & proprioceptionoNeurons with endings in skin surface: Aalpha & Abeta fibersoFibers enter the spinal cord& dorsal columnsoSynapse in the brainstem (dorsal column nuclei)… axons can bevery long (excitatory)oSecond order neurons (medial lemniscus) cross over to thecontralateral side of the thalamusoThird order neurons move up to the cortex-Anterolateral pathwayoPain & temperatureoAgamma & C fiberso

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Term
Fall
Professor
Dr.Walker
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