Ataxic dysarthria Flashcards
Why is it important to make a differential diagnosis?
Therapy is different for each dysarthria.
What is ataxic dysarthria?
A problem with coordination (in-coordination) so it is worthless to work on oral motor strengthening exercises.
Why is it worthless to work on oral motor strengthening with patients who have ataxic dysarthria?
The problem is with incoordination
If you don’t know what the diagnosis is, what do you write in your diagnosis statement?
Diagnosis is undetermined
Ataxic dysarthria is a ______ _______ ______ dysfunction.
cerebellar control circuit
________ ________ is a cerebellar control circuit dysfunction.
Ataxic dysarthria
What subsystems does ataxic dysarthria primarily affect?
articulation and prosody
What are the three functions of the cerebellum?
- Imposes control on posture and movement initiated elsewhere.
- coordinates posture, locomotion, and coordinated activities by adjusting activities of the indirect & direct motor systems and through them the activities of the LMN system.
- Major function is error control
The ______ imposes control on posture and movement initiated elsewhere.
cerebellum
The cerebellum imposes control on _____ and _____ initiated elsewhere.
posture
movement
The cerebellum coordinates _______, ______, and coordinated activities by ______ activities of the indirect & direct motor systems and through them the activities of the LMN system.
posture
locomotion
adjusting
How does the cerebellum coordinate posture, locomotion, and coordinated activities?
By adjusting activities of the indirect & direct motor systems and through them the activities of the LMN system.
What is the major function of the cerebellum?
error control
cerebellum receives input primarily from _____ ______ and provides output to _____ (through ______) and then to _______ system.
motor cortex
cortex
thalamus
peripheral
Lesions in the cerebellum can cause:
- hypotonia
- errors in force, speed, timing, range , and direction of movements.
The reduced muscle tone and in-coordination of muscles results in:
slow rate of speech and inaccuracy in speech movements.
What happens when there is reduced muscle tone and incoordination of muscles?
slow rate of speech and inaccuracy in speech movements.
What causes slow rate of speech and inaccuracy in speech movements?
Reduced muscle tone and in-coordination of muscles.
In observing ataxic dysarthria you can see the reflection of the role of the ______ in breakdown in ______ ______ and _______.
cerebellum
motor control
organization
In ataxic dysarthria, speech doesn’t reflect the ______ as seen in other dysarthrias, but rather _______ _____ and _______ speech.
weakness
poorly controlled
coordinated
What are the three loves in the cerebellum?
- anterior
- posterior
- flocculonodular
What does the anterior lobe consists of?
Most of the vermis and the anterior aspect of the cerebellar hemispheres. It is important in regulating posture, gait, and muscle tone of the trunk of the body.
The _____ lobe consists of most of the vermis and the anterior aspect of the cerebellar hemispheres. It is important in regulating posture, gait, and muscle tone of the trunk of the body.
anterior
The anterior lobe consists of most of the ____ and the anterior aspect of the _____ _______. It is important in regulating _____, ______, and ______ _____ of the trunk of the body.
vermis cerebellar hemispheres posture gait muscle tone
The ____ lobe makes up the greater part of the cerebellum and is located between the ______ lobe and the _______ lobe. It is important for coordinating skilled, voluntary muscle activity and muscle tone.
posterior
anterior
flocculonodular
Posterior lobe:
makes up the greater part of the cerebellum and is located between the anterior and flocculonodular lobe.
Why is the posterior lobe important?
It is important for coordinating skilled, voluntary muscle activity and muscle tone.
_______ lobe is important for coordinating skilled, voluntary muscle activity and muscle tone.
posterior
The _______ lobe includes the inferior part of the vermis and the attached flocculi (small appendages in the posterior inferior region).
flocculonodular
What does the flocculonodular lobe include?
The inferior part of the vermis and the attached flocculi
What is the vermis?
The middle of the cerebellum.
The ______ is the middle of the cerebellum.
vermis
There are two hemispheres to each side of the ______ and each of these is connected to the _______ thalamus and _______ cerebral hemispheres.
vermis
opposite
opposite
There are two hemispheres to each side of the vermis and each of these is connected to the opposite ______ and opposite ______ ______.
thalamus
cerebral hemispheres
Each of the cerebral hemispheres controls function on the ______ or ____ side of the body.
ipsilateral
same
The right side of the cerebellum controls the _____ side of the body and connects to the _____ cerebral hemisphere.
right
left
what does the right side of the cerebellum control and what does it connect to?
It controls the right side of the body and connects to the left cerebral hemisphere.
The right side of the body is controlled by the ____ cerebral hemisphere and the _____ cerebellar hemisphere.
left
right
There are cells in the cortex o f the cerebellum called _____ cells.
purkinje
Where are the purkinje cells located?
cortex of the cerebellum
There are about _____ purkinje cells in the cerebellum.
15 million
The purkinje cells make up the ____ part of the _______ ______.
middle
cerebellar cortex
The purkinje cells connect to other __ deep in the _______. _______ is passed through these connections.
nuclei
cerebellum
Information
What is the nuclei that is very important in speech control as it aids in initiating movement and regulating posture?
dentate nucleus
What is dentate nucleus?
The nuclei that is very important in speech control as it aids in initiating movement and regulating posture
______ _______ is very important in speech control as it aids in initiating movement and regulating posture.
dentate nucleus
Dentate nucleus is very important in speech control as it aids in initiating _______ and regulating _______.
movement
posture
There are tracts of nerve fibers that enter an leave the cerebellum through three structures:
- inferior cerebellar peduncle
- middle cerebellar peduncle
- superior cerebellar peduncle
Each cerebellar hemisphere connects to the rest of the _____ _____ through these three bundles of nerve fibers- superior, middle and inferior peduncles.
nervous system
Each cerebellar hemisphere connects to the rest of the nervous system through these three bundles of nerve fibers:
- inferior cerebellar peduncle
- middle cerebellar peduncle
- superior cerebellar peduncle
The _______ peduncle is a bridge between the midbrain and cerebellum. It is _____ pathway.
superior
The ______ peduncle is a bridge between the pons and cerebellum. It is ____ pathway.
middle
afferent
The ______ peduncle coordinates information between the medulla and cerebellum. it is mainly an ______ pathway.
inferior
efferent
The superior peduncle is a bridge between the ______ and ______.
midbrain
cerebellum
The middle peduncle is a bridge between the _____ and ______.
pons
cerebellum
What does the inferior peduncle do?
It coordinates information between the medulla and cerebellum.
The superior peduncle is ______ pathway.
efferent
The inferior peduncles is mainly an _____ pathway.
efferent
The middle peduncle is an _____ pathway.
afferent
Not a lot is known about _______ lesions, but lesions causing speech problems are usually _____, or in or near the _____ (midline) or involving the ____ _____.
cerebellar
bilateral
vermis
dendate nucleus