Download Brain Notes

Brain Notes
Tools for Viewing Brain Structure and Activity
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EEG
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Electroencephalogram
measures electrical
currents across the
brain
Measure brain activity
Infant scientist – Noah, age 9 mo.
Tools for Viewing Brain Structure and Activity
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CT scan
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Also called a CAT scan
Computerized axial
tomography
X-ray of brain tissue
Shows brain structure
Tools for Viewing Brain Structure and Activity
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PET scan
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Positron Emissions
Tomography
Patients drinks
radioactive glucose
and image shows
areas of brain
activity.
Tools for Viewing Brain Structure and Activity
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MRI
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Magnetic Resonance
Imaging
Exposes brain to
magnetic field
Shows brain structure
Tools for Viewing Brain Structure and Activity

fMRI
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functional MRI
Uses magnetic field
Not harmful
Shows brain structure
and activity
Organization of the Nervous System
Autonomic Nervous System
Autonomic Nervous System
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Sympathetic Nervous System
speeds up the body.
Parasympathetic Nervous System
slows the body.
Types of Neurons
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Sensory Neurons –
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Carry the message
from the sense
organs to the CNS
Motor Neurons –
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Carry the message
from the CNS to
the muscles or
glands
Cerebellum
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Controls balance
and coordination
In the rear of the
head, behind the
brainstem
Cerebral Cortex
Controls information
processing; wrinkled
to increase surface
area
Frontal Lobes
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Located in the
forehead region
Includes the
motor cortex
(part of brain
that controls
voluntary
movement)
judgment,
planning,
processing new
memories
Parietal Lobes
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Located on the
top and rear of
head
Contains the
sensory cortex
(part of brain
that registers
and processes
senses)
Occipital Lobes
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Located in the
back of the head
Contains the
visual cortex
Temporal Lobes
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Located on the
sides of head,
above ears
Receives and
processes
auditory
information
Corpus Callosum
bundle of nerves
connecting the left
and right
hemispheres