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psych U3M11
imaging techniques and older brain anatomy
Question | Answer |
---|---|
EEG? | Measure brain activity in milliseconds by placing electrodes on the scalp; FUNCTION |
CAT? | Provides 3D view of the brain by slicing images ; STRUCTURE |
MRI? | Uses magnetic fields and radio waves to produce computer-generated images of soft tissue; ANATOMY. |
PET? | Visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a task; FUNCTION |
fMRI? | Reveals blood flow, therefore revealing activity by comparing MRI scans; FUNCTION AND STRUCTURE |
What are the structures that make up the limbic system? | the hippocampus, amygdala, and the hypothalamus |
job of the thalamus | directs messages to the sensory RECEIVING areas in the cortex and transmits REPLIES to the cerebellum and medulla. |
job of hypothalamus | Directs maintenance activities, helps control endocrine system thru the pituitary gland, and linked to emotion and reward. |
job of amygdala | controls emotion/agressive anger; flight/fight |
job of hippocampus | affects learning and (short-term) memory |
job of cerebellum | coordinates voluntary movement, balance |
job of pons? | controls facial expressions and sleep&wake cycles |
job of reticular formation? | helps control arousal and attention; loose network of neurons |
job of medulla? | controls heartbeat and breathing and blood pressure |
location of medulla | base of the brainstem |
location of thalamus | top of the brainstem |
location of cerebellum | rear of brainstem |
location of limbic system | below the cerebral hemispheres |
location of amygdala | two lima bean sized neural clusters in limbic system |
location of hypothalamus | below the thalamus |
microelectrode (EEG) | tiny electrodes put in neurons to study the individual function |
macroelectrode (EEG) | analyzes electrical activity of brain in various cognitive states in brainwaves |
lesion | a region in an organ or tissue that has suffered damage through injury or disease |