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Parts/lobes of the brain
Bullet 1 MT: Nervous system 1
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4 Lobes of the Brain Frontal Parietal Temporal Occipital
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Frontal Lobe Fxns: reasoning, planning, problem solving, logics, thinking Biggest area of brain Stops developing ~25 years old
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Parietal Lobe Fxns: recognizing stimuli, orientation, and recognition
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Temporal Lobe Fxns: memory, speech, and auditory stimuli
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Occipital Lobe Fxns: visual processing
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Important Lines of Brain
Central Sulcus: separates frontal and parietal lobes
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Important Lines of Brain
Lateral fissure: separates temporal and frontal lobes
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Important Lines of Brain
Longitudinal fissure: separates brain medially
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INSIDE OF Brain
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Parts of the Brain Brainstem (old reptilian brain) = midbrain, pons, and medulla oblongata Limbic System (old mammalian brain) = thalamus, hypothalamus, amygdala, hippocampus Corpus Callosum
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Brainstem: Midbrain, Pons, Medulla Oblongata
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Brainstem: Midbrain: -superior end of brainstem
-Fxn: eye mvmts, reflexes in pupil Pons: -inbetween midbrain and medulla -Fxn: regulates respiration (breathing) Medulla Oblongata: -inferior end of brainstem; leads into spinal cord -Fxn: heart rate, vomiting, coughing, sneezing, hiccupping, swallowing
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Parts of the Brain Brainstem (old reptilian brain) = midbrain, pons, and medulla oblongata Limbic System (old mammalian brain) = thalamus, hypothalamus, amygdala, hippocampus Corpus Callosum
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Limbic System Thalamus:
-Fxn: relay center; most sensory neurons go here and then they are sent to correct place Hypothalamus: -Fxn: controls sleep/wake cycles, homeostasis, thirst, appetite Hippocampus: -Fxn: memory and learning Amygdala: -Fxn: memory of emotional situations especially fear
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Limbic System
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Parts of the Brain Brainstem (old reptilian brain) = midbrain, pons, and medulla oblongata Limbic System (old mammalian brain) = thalamus, hypothalamus, amygdala, hippocampus Corpus Callosum
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Corpus Callosum Corpus Callosum:
-Fxn: neurons cross to other side of brain Ex: left eye sends signal through left hemisphere, through the corpus callosum, to the right hemisphere, to the occipital lobe
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Corpus Callosum
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Taking sides…. how the two sides process information that is!
Left Brain Logical Sequential Rational Analytical Objective Looks at parts Right Brain Random Intuitive Holistic Synthesizing Subjective Looks at wholes
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Left Hemisphere processes things more in parts and sequentially
recognizes positive emotions Identified with practicality and rationality Understands symbols and representations Processes rapid auditory information faster than the right (crucial for separating the sounds of speech into distinct units for comprehension) is responsible for language development. It develops slower in boys, that is why males usually develop more language problems than females.
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Right Hemisphere Recognizes negative emotions High level mathematicians, problem solvers, and chess players use The “non-verbal” side Responds to touch and music (sensory) Intuitive Responsive to color and shape Emotional and originative
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Taking sides…. what information the two sides recognize!
Left Brain Letters Numbers Words Right Brain Faces Places Objects based on Sousa (1995, p. 88)
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Taking sides….take the test!
Hemispheric Dominance Inventory Test
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Myth of “Right/Left brained”
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