PSYC 107 1st Edition Lecture 9 Outline of Last Lecture I Recap a Neurotransmitters II Integration of Neural Signals III Nervous System a Peripheral Nervous System 1 Parasympathetic 2 Sympathetic b Central Nervous System i Brain and the Spinal Cord c Lateralization i Includes the idea of the left brain and the right brain Outline of Current Lecture I Brain Anatomy a Corpus Colossum i Allows communication between the left and right sides of the brain b Homunculus c Major brain Structures i Brain stem cerebrum cerebellum limbic system hypothalamus amygdala hippocampus d Cerebral Cortex i Frontal Lobe ii Temporal Lobe iii Parietal Lobe iv Occipital Lobe e Neuroplasticity and Critical Periods 1 Plasticity is not permanent some changes cannot happen later in life f Heredity this is passed from parents to the offspring g Heritability extent to which variation in a population is due to genetics i Nature vs nurture Current Lecture II Brain Anatomy a Corpus Colossum i Allows communication between the left and right sides of the brain b Homunculus c d e f g i Little man brain regions arranged in such a manner that kind of mimics the body the part of the brain that controls the foot is near the part of the brain that controls the knee 1 Brain represents sensitivity vs size fingertips 2 Much more space is devoted to face and fingers because that is where such sensitivity comes from Major brain Structures i Brain stem controls basic functions such as heart rate and breathing we are dead without this ii Cerebellum controls voluntary movement integrates the 2 sides of the brain voluntary motion iii Cerebrum controls all sorts of stuff but mainly thinking and sensitivity behavior iv Limbic System in charge of emotion and memory and emotional memory v Hypothalamus 3F s food fluids and sex LOL vi Amygdala fear and aggression vii Hippocampus storage and long term memory consolidation Cerebral Cortex i Frontal Lobe thinking planning and judgment there is one on each side ii Temporal Lobe hearing and language iii Parietal Lobe touch iv Occipital Lobe visual information Neuroplasticity and Critical Periods i Always learning so we are still always somewhat plastic ii Changes in the brain iii Connectivity among brain cells iv There are periods where if you don t learn something you never will 1 Plasticity is not permanent some changes cannot happen later in life a Radical Hemispherectomy removing half of the brain at an early age can lead to almost perfectly normal function in the child Heredity this is passed from parents to the offspring Heritability extent to which variation in a population is due to genetics i Nature vs nurture ii How much does genetic influence experience 1 Color blindness sex linked trait a Males XY exhibit Females XX carry
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