Quiz 2 Flashcards
Directional terms for the brain
Coronal Plane
Sagital plane
Horizantoal plane
Major brain divisions
Hindbrain, Midbrian, Forebrain
Hindbrain
-basic
-Medulla-controls reflexes, breathing ,HR, Salivation,
-Pons- important for sleep wake cycle
Cerebellum-Balance and coordination
Midbrain
Substantianiga-
Contains many dopamine neurons
Forebrain
- composed of 2 cerebral hemisphers
- Communicate by the corpacallem
- Corpacalem corpus callosum - Bunch of myelinated axons that connect 2 hemisphers
- right hemisphers controls movement and sensory from the left side
- cerebral cortex: outer most layers of neurons.sourronds the fore brain
Microdialyisis
Measures the amount of the NT Realeased into synaptic Cleft extracellular space
Iacuc institutional animal care and use committee)
Rreduction- lower the number needed
Replacement- another comp. model or
Rifinement-modifiy protocol
Fmri
- activity levels
- measuring oxygen levels
- more active neurons consume more oxygen
- not measuring aps
Electroencephologaph EEG
- Measures electrical activity (aps)
- can only measure activity in ca filled neurons
- limmitionts not specific
Pet Scan
-Glucose levels
Studying the Brain and Behavior
Examine the effects of brain damage on behavior
Correlate brain anatomy with behavior
Record brain activity during behavior
Examine the effects of stimulating a brain area on behavior
Brain Damage and Phineas Gage
Phineas Gage
Iron rod through the frontal lobe
Profound personality change after accident
Stereotaxic Instrument
A device for precise placement of electrodes in the brain… come back
Issues with Lesion Studies?
Deficit caused by anesthesia?
Deficit caused by drilling hole through head and brain?
Sham lesion
Compensation of other areas after lesion?
What affect does the lesion have on other areas and systems?
Electrical Stimulation of the Brain
Wilder Penfield
Stimulated specific areas of the brain during neurosurgery
