3B1, 3B2, and 3B3 Flashcards
Damage to the back of the brain
Disrupts vision
Damage to the left front part produces
Speech difficulties
Lesion
Tissue destruction. A brain lesion is a naturally or experimentally caused destructions of brain tissue
Damage to one area of the hypothalamus reduces
Eating and damage in another causes over-eating
Electroencephalogram (EEG)
An amplified recording of the waves of electrical activity that sweep across the brain’s surface. These waves are measured by electrodes placed on the scalp
CT (computed tomography) scan
A series of x-Ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body
PET (position emission tomography) scan
A visual display of brain activity that detects where a radioactive form a glucose goes while the brain performs a given task
Neurons are
Glucose hogs
MRI (magnetic resonance imaging)
A technique that uses magnetic fields and radio waves to produce computer-generated images of soft tissue. MRI scans show brain activity
Musicians who have perfect pitch
Have a larger neural area in the left hemisphere of their brain
Patients who have schizophrenia have
Fluid-filled brain areas
FMRI (functional MRI)
A technique for revealing blood flow and, therefore, brain activity by comparing successive MRI scans show brain function
In humans the brain represents
1/45th of the human body
Brainstem
The oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull; the Brainstem is responsible for automatic survival functions
Medulla
The base of the Brainstem; controls heartbeat and breathing
Reticular formation
A nerve network in the brain Mayen that plays an important role in controlling arousal
Thalamus
The brain’s sensory switchboard, located at the top of the Brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and mendulla
Cerebellum
The “little brain” at the rear of the Brainstem; functions include processing sensory input and coordinating movement output and balance
Limbic system
Doughnut-shaped neural system (including the hippocampus, amygdala, and hypothalamus) located below the cerebral hemispheres; associated with emotion and drives
The amygdala
Two Lima bean-size neural clusters in the limbic system; linked to emotion
A slight disturbance of the amygdala can make an
Ill-tempered creature became calm and placid
Hypothalamus
A neural structure lying below the thalamus; it directs several maintenance activities (eating, drinking, body temperature), helps govern the endocrine system via the pituitary gland, and is linked to the emotion and reward
Pleasure
Motivates someone more than anything else
Animals have built-in systems
That reward activities essential to survival