Unit 3.3 Psychology Flashcards
(14 cards)
Electroencephalogram (EEG)
A amplified recording of the waves of electrical activity sweeping across the brain’s surface. Measured by electrodes placed on the scalp
Lesion
Tissue destruction
CT (computed tomography) scan
A series of x-ray photographs taken from different angles and combined by a computer into a composite representation of a slice of the brains structure
PET (prositron emission tomography) scan
A visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task
MRI (magnetic resonance imaging)
A technique that uses magnetic fields and radio waves to produce computer-generated images of soft tissue. Show brain anatomy
fMRI (functional MRI)
A technique for revealing bloodflow and, therefore, brain activity by comparing successive MRI scans. Shows brain function as well as structure
Brainstem
The oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull. Responsible for automatic survival functions
Medulla
The base of the brainstem. Controls heartbeat and breathing
Thalamus
The brain’s sensory control center, located on top of the brainstem. Directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla
Reticular formation
A nerve network that travels through the brainstem and thalamus and plays an important role in controlling arousal
Cerebellum
The little brain at the rear of the brainstem. Processes sensory input, coordinates movement output and balance, and enables nonverbal learning and memory
Limbic system
Neural system located below the cerebral hemispheres. Associated with emotions and drives
Amygdala
Two Lima bean sized neural clusters in the lambic system. Linked to emotion
Hypothalamus
A neural structure lying below the thalamus. Directs several maintenance activities, helps govern the endocrine system via the pituitary gland, and is linked to emotion and reward
