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PSYB65 Lecture 1-5

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Ted Petit

PSYB65Lecture 1HindbrainCerebelluminvolves in sensory motor integrationTaking sensory information to integrate motor informationMedullaresponsible for basic life processesHeart rate respirationThe core of the hindbrainMidbrainReticular formationcontrolling sleepwakefulness cycle circadian rhythmInvolve the most basic aspect of the circadian rhythmForebrainThalamusrelay stationHypothalamushormone regulation hungerthirst behavior territoriality fight their territory sexual behaviorRegulate life processes4Ffinding feeding fighting and fucking sexual reproductionCerebral cortex neocortexthe most evolved part of the human brainGive intelligible thinkingLimbic systemsystem for emotion and emotionalityAmygdala hippocampus and hypothalamusEmotionality is a big component for human for emotional repertoireEvolution of the brainNeuroplasticityNuclei formed in the anterior portion of the nervous system form the brainThe more intelligent the species the larger the cortex for the speciesHowever it need to be compared for brain size and body sizeHuman is number 2 while dolphins have the largest brain relative to their body sizeThe size of the brain structure is directly related to the function to that particular speciesRats uses smell to detect prey and food therefore their olfactory bulb is largerHow human brain developedOntogenetic development development in the womb recapitulate phylogeny development development of a speciesAs the cerebral cortex reaches maximum in the skull it would forces to grow backward and therefore develop convolutionsThe cortex therefore develop the latest therefore its the newestMacleans Triune theory of brain functionSuggests that we today have 3 brainsReptilian braincontrol the basic processesDate back to reptilesThe brainstemOldmammalian braindeal with the emotionalityLimbic systemNewmammalian brainintellectual behaviorCerebral cortexLecture 2The cerebral cortex is divided into 4 lobesSulcusvalley of the brainGyrushill of the brainLongitudinal fissureseparate the right and left hemisphereCentral fissue central sulcusfissure at the center of the brainLateral fissure Sylvian fissurelarge fissure on the side of the brainCorpus callosumconnects the 2 sides of the brain
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