Neuro Terminology Flashcards
agnosia
unable to recognize familiar objects (e.g., visual agnosia where patients unable to recognize familiar faces/people
akinesia
inability to initiate movement
expressive aphasia
Broca’s aphasia: typically L brain insult, R hemiplegia, severe difficulty with verbal expression, impaired object naming and writing
global aphasia
most common and most severe aphasia
reduced speech and comprehension
difficulty with reading and writing too
receptive aphasia
Wernicke’s aphasia: severe disturbance auditory comprehension. Reading, writing and word recognition also impaired.
apraxia
inability to perform movement learned previously
despite no loss of strength, coordination, sensation or comprehension
ideational apraxia
person no longer understands routine tasks
e.g., washing hands, brushing teeth
ideomotor apraxia
person unable to do task on command
but can do it spontaneously
astereognosis
inability to recognize objects by touch alone
asynergia
inability to move muscles together in a coordinated manner
ataxia
uncoordinated movement, esp gait
athetosis
slow, involuntary worm-like twisting motions
usually seen in some forms of cerebral palsy
causalgia
painful, burning sensations
often present in complex regional pain syndrome
(formerly know as reflex sympathetic dystrophy)
Cheyne-Stoke respiration
common breathing pattern with apnea of 10-60 sec
then gradually increasing then decreasing depth and frequency of respiration
correlated with depression of frontal lobe
correlated to diencephalic dysfunction
can occur with severe TBI or CHF
chorea
rapid involuntary jerky movements
Huntington’s Chorea
decerebrate rigidity
ext of UE/LE secondary to brain stem injury
decorticate rigidity
UE flexed, LE ext
delirium
temporary confusion and loss of mental function
often due to illness, infection, drug toxicity or lack of oxygen
often reversible
demential
loss of memory or intellectual functioning
may be reversible if due to toxins, drugs, metabolic or psychiatric disorders
often slowly progressive and non-reversible if secondary to alcoholism, Alzheimer’s, infarction, Parkinson’s, etc.
dysmetria
inability to judge distance
often due to cerebellar dysfunction
(unable to touch finger to nose)
EMG
produces graphic record of muscle contraction in response to e-stim
used to evaluate voluntary electrical activity of a muscle
glove and stocking anesthesia
seen with generalized peripheral neuropathies (distal degeneration)
occasionally seen in Guillan-Barre syndrome
Herpes-Zoster
shingles
painful inflammation of the posterior root ganglion
caused by herpes (chicken pox) virus
vesicles form along the dermatome
Horner’s syndrome
ptosis of the eyelid
constriction of the pupil
lack of facial sweating on the ipsilateral side
often seen with CVA of :
ANT inferior
POST inferior
CEREBELLAR ARTERIES
Morton’a neuroma
compression between 3rd and 4th MT due to excessive pronation in stance
nerve enlarges and forms a neuroma of the interdigital nerve resulting in metatarsalgia
nerve conduction velocity (NCV) test
test to determine severity of nerve compression prior to surgery (as in HNP)
compressed or damaged nerve has decreased speed of action potential
nystagmus
rapid back and forth movement of the eyeballs
reciprocal inhibition
inhibition of antagonists to primary muscle(s)
essential to coordinated movement
Romberg’s sign
loss of balance when eyes are closed
body sways occur or amplified
somatagnosia
lack of awareness of relatioship of one’s own body parts
or the body parts of others
vegetative state
a deep coma with abnormal posturing
if persistent, rehab potential diminishes
visual acuity
sharpness of vision
decreases with age, diabetes
may need reading glasses for near vision
decreased low light vision
decreased ability to adapt to dark or light environments
may need brighter lights and/or color contrasts in home to increase ambulation safety
homonymous hemianopsia
damage to the contralateral optic tract resulting in deficit of L or R half of visual field
Both eyes lose L or R field
bi-temporal hemianopsia
injury at the optic chiasm resulting in decreased temporal or peripheral fields
also known as tunnel vision
monocular blindness
injury of one of the optic nerves resulting in