Speech Therapy

Are Parkinson’s Disease And Dysprosody Related?

Many patients suffering from Parkinson’s Disease (PD) are seen to have been experiencing difficulty in many Prosodies. Prosody is the rhythm, control of pitch and stress on words. In Dysprosody a person starts to speak in a different accent which he was never exposed to. They undergo alteration in their vocalization. Parkinson’s Disease is a type of movement disorder. Rigidity in muscles, tremor (involuntary and rhythmic to and fro motion of the body), slowing of physical movement and loss of complete physical movement in excess cases.

Prosodic Complications In PD patients:

Difficulty in producing proper pitch, rhythm and loudness in their speech.
Modulating voice for expressing anger is extremely hard to produce.
Placing abnormal pauses in speech ( a typical trait of Parkinsonian Dysprosodic or a Dysprosodic Parkinsonian)
Decreased rate of speech.
Difficulty in understanding others emotion.

Dysprosodic symptoms have seen to increase in PD patient with due progression. The rate of speech, placing pauses and pitch balancing become worse over time. But no much research has been performed to prove the relation between the two disorders. So very little is known about the alterations and progression of prosodies in a Parkinson’s Disease. Researchers are now studying the gradual changes in the rate of speech and pitch balancing in a Parkinson’s Disease.

Some study is carried out about the emotional prosodies in PD patients. The following signs are found in the PD patients:
Loss in preception ability about appreciations and differences in volume, pitch and rate of speech.
Interpreting personal emotions and understanding others emotions by speech.
Establishing verbal communication effectively.
Making appropriate facial expressions and body gestures.

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