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Brain's Three Parts
- hindbrain
- midbrain
- forebrain
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Hindbrain
- located near base of skull
- involved w/ most basic processes of life
- -made up of cerebellum, medulla, and pons
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Cerebellum
- part of hindbrain
- helps control posture/ balance
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Medulla
- part of hindbrain
- controls breathing and reflexes
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Pons
- part of hindbrain
- involved in producing chemicals for sleep
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Midbrain
- located above the pons
- integrates sensory info. & relays it upward
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brain stem
- made up basically by Medulla, pons, & midbrain
- spanned across by Reticular Activating System (RAS)- alerts rest of brain of incoming signals
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Forebrain
location- covering brain's centeral core
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Thalamus
- part of forebrain
- Integrates sensory output
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Hypothalamus
- part of forebrain
- controls hunger, thirst, sexual behavior
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Cerebral Cortex & Cerebum
- outer and inner layer of forebrain
- C.C.- allows us to see, read, & understand
- C.- where conscious thinking process occurs
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Limbic System
- found in core of forebrain
- regulate emotions and motivations
- made up of/includes:
- -amygdala- violent emotions
- -thalamus
- -hippocampus- new memories formation
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Lobes
diff. regions that the cerebral cortex is divided
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Lobe types
- Pariental lobe- body sensations/ senses
- Temporal lobes- hearing, memory, emotion, speaking
- Frontal lobes- organization, planning, creative thinking
- Primary somatosensory cortex- recieves info.
- Primary motor cortex- fine movement control
- Occipital lobe- vision
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Left Hemisphere
- Mathematical, calculation, logic
- - (mathematical, verbal, analytic)
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Right Hemispehere
- Nonverbal, Spatial, holistic
- -creativity, intuition
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Corpus Calosum
- connects both sides of the brain
- severed in cases of severe epileptic seizures
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Electroencephalograph (EEG)
machine that records electrical activity of brain
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Computerized Axial Tomography (CAT) scans
- used to study brain
- -pinpoint injuries & brain deterioration
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Positron Emission Topography (PET) scans
used to see areas of brain that activate while performing tasks
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Magnetic Resonance Imaging (MRI)
used to study brain structure & activity
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functional magnetic resonance imaging (fMRI)
like MRI, except doesnt use radio frequencies, better picture
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