A small seizure in which there is a sudden temporary loss of consciousness lasting only a few seconds.
chemical transmitter substance released by some nerve endings.
, neurotransmitter used to control activity, including movement, memory, attention, and dreaming
transmitters of nerve impulses toward the CNS; also known as sensory nerves.
Loss of mental ability to understand sensory stimuli (such as sight, sound, or touch) even though the sensory organs themselves are functioning properly (e.g., the inability to recognize or interpret the images the eye is seeing is known as optic agnosia).
The inability to convert one's thoughts into writing.
the inability to understand written words 失語症
without sensitivity to pain
loss of feeling or sensation
A localized dilatation in the wall of an artery that expands with each pulsation of the artery; usually caused by hypertension or atherosclerosis.
the loss of the ability to speak, write, and/or comprehend the written or spoken word beause of an injury to or disease in certain areas of the brain. 失語症
inability to perform purposeful movements or to use objects appropriately; not associated with sensory or motor impairment or paralysis. 行動不能症
web-like middle layer of the meninges surrounding the brain and spinal cord.
A star-shaped neuroglial cell found in the CNS.
Tumor of the brain or spinal cord composed of astrocytes.
lack of muscular coordination
a sensation (as of a cold breeze or bright light) that precedes the onset of certain disorders such as a migraine attack or epileptic seizure
autonomic nervous system
the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands
The part of the nerve cell that transports nerve impulses away from the nerve cell body,
A protective characteristic of the capillary walls of the brain that prevents the passage of harmful substances from the bloodstream ito the brain tissue or CSF.
Abnormally slow movement,
connects the brain and spinal cord; contains tge midbrain, the pons, and the medulla oblongata.
A positive sign of meningitis, in which there is an involuntary flexion of the arm, hip, and knee when the patient's neck is passively flexed.
A hole drilled into the skull using a form of drill.
"horse's tail", a fan of nerve fibers below the spinal cord
a burning pain in a limb along the course of a peripheral nerve; due to injury to peripheral nerve fibers.
The part of the cell that contains the nucleus and the cytoplasm.
central nervous system
One of the two main divisions of the nervous system, consists of the brain and the spinal cord
The part of the brain responsible for coordinating voluntary muscular movement; located behind the brain stem.
a brief interruption of brain function, usually with loss of consciousness lasting a few seconds
small scattered venous hemorrhages in the brain
The thin outer layer of nerve tissue, known as gray matter, that covers the surface of the cerebrum.
fluid in the space between the meninges that acts as a shock absorber that protects the central nervous system
The largest and uppermost part of the brain. It controls consciousness, memory, sensations, emotions, and voluntary movements.
abnormal breathing pattern where a patient has periods of apnea alternating with deep, gasping breaths
A deep sleep in which the individual cannot be aroused and does not respond to esternal stimuli. 昏睡状態
pertaining to a coma
A permanent shortening of a muscle causing a joint to remain in an abnormally flexed position, with resultant physical deformity.
One of the many elevated folds of the surface of the cerebrum; also called a gyrus.
surgical opening of the skull
Any dificiency or variation of the normal, as in a weakness deficit resulting from a cerebrovascular accident(CVA).
A progressive irreversible mental disorder in which the person has deteriorating memory, judgement, and abbility to think.
destruction or removal of the myelin sheath that covers a nerve or nerve fiber
A profection that extends from the nerve cell body. It receives impulses and conducts them on to the cell body.
located between the midbrain and the cerebrum and consists of the thalamus, hypothalamus, optic chiasma, and pineal body
double vision; also called ambiopia.
the outermost (and toughest) of the 3 meninges; surrounding the brain and spinal cord.
A condition characteried by an impairment of the ability to read. Leters and words are often reverssedd when reading.
transmitters of nerve impulses away from the cns
An abnormal conditionin which a blood clot (embolus) becomes lodged in a blood vessel, obstructing the floow off blood within the vessel.
The space immediately outside the dura mater that contains a supporting cushion of fat and other connective tissues.
nervous disease characterized by seizures
A deep roove on the surface of an organ.
Soft spot (incomplete bone formation) between the skull bones of an infant
way of walking