ATAXIC Flashcards
definition of ataxic dysarthria
damage to cerebellum or neural pathways that connect cerebellum to other parts of central nervous system
speech characteristics of ataxic
primarily articulatory and prosodic, giving speech unsteady, slurred quality
primary function of cerebellum
coordinate timing and force of muscular contractions
-processess sensory information from all over the body and integrates information into execution of movement
the cerebellum communicates rest of ___
CNS through three bundles of neural tracts called cerebellar penduncles
what are the 3 parts of the cerebellum
superior, middle, inferior pendunlce
cerebellar control circuits
neurons that course through three cerebellar pathways, not called upper motor neurons because doe not synapse w lower motor neurons
role of superior peduncle
transmitts cerebellar commands to the coretex and the extrapyramidal system
role of middle peduncle
transmits planned movements from the association cortex to the cerebellum
role of the inferior peduncle
transmits sensory information from the entire body to the cerebellum
2 ways cerebellum influences speech movements
through corticocerebellar control circuit (thalamus) and through the extrapyramdial system (timing and focr of mvoements)
overall causes of ataxic dysarthria
damage to cerebellum or its control circuits causing difficulties coordinating muscle movements
cerebral ataxia
movement of deficits of timing, force, range, and direction
vermis
if damaged, then it would impact speech abilities, it is the midpoint of cerebellum between cerebellar hemispheres
causes of ataxic dysarthria
degenerative diseases, stroke, toxic conditions, metabolic conditions, traumatic head injury, tumors, viral infections, invading cerebellum, infections, bacterial abscess
speech characteristics of ataxic
poorly coordinated movements, problems controlling timing/force of speech, slurred, monotonous articulation, scanning speech
PRIMARILY DISORDER OF ARTICULATION AND PROSODY
