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29 Cards in this Set

  • Front
  • Back
Neurotransmitters
norepinephrine- maintains alertness, wakefulness
Dopamine- important to movement and to frontal lobe activity
Neural Networks
Neurons in the brain connect with one another to form networks
Brain learns by modifying certain connections in response to feedback
Peripheral Nervous System
Takes info to and from CNS
Somatic Nervous System
Primarily controls: motor output, sensory input
Autonomic Nervous System
Two branches- sympathetic: emergency system
Parasympathetic: calming functions
Two systems usually act in opposition but can also act in concert
Biofeedback
System for feeding back info regarding a physiological state- blood pressure, muscle tension
Central Nervous System
Spinal Cord- 31 nerves, contains sensory neurons and motor neurons
Spinal Cord Reflex- a simple, automatic, inborn response to a sensory stimulus
Brain- major structures of the brain: hindbrain, midbrain and forebrain
Hindbrain
Medulla
Pons
Cerebellum
Reticular formation
Medulla
regulates heart rate and breathing
- cross over takes place
Pons
- links to cerebellum, affects arousal and dreaming
Cerebellum
- balance, coordination, movement
- identifies if stimulation is of internal or external origin
- tells brain to ignore internal sensations
Reticular formation (deep inside)-
controls arousal, walking and sleeping
Midbrain-
in mammals, little more than a relay station
- coordinates signals between hindbrain and forebrain
– Thalamus
critical relay station to the higher brain centers
Pituitary Gland-
part of the endocrine system
- connects to the hypothalamus
- releases critical hormones
)- limbic system
Hypothalamus
Amygdala
Hippocampus
Hypothalamus
- feeding, fighting, fleeing, and mating
Amygdala
- aggression, fear, emotion, laden memories
Hippocampus
memory formation, indexing
Corpus Callosum
- major pathway between sides of the brain
- connects comparable structures on each side
- permits data received on one side to be processed in both hemispheres
Frontal Lobes
 speaking, muscle movements, making plans and judgements, impulse control
Parietal Lobes
Process body sensations
Temporal Lobes
o Hearing
o Complex visual processing (face recognition)
 Damage here can lead to face blindness
- Occipital Lobes
o Visual info
Projection Areas
-
o Receiving stations for sensory information
o Dispatch stations for motor commands
o About 25% of cortex
o Found in all lobes of the brain
- Somatosensory Cortex-
o
Area at the front of the parietal lobes
o Registers and processes body sensations
Auditory cortex
o Top of temporal lobe, processes auditory info
- Visual Cortex
o Back of occipital lobe, processes visual info
- Association Areas
o Located in cerebral cortex
o Involved in higher functions ( learning, remembering, thinking, speaking)