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Joseph Duffy

PhD, BC-ANCDS, F-ASHA

Joseph Duffy, PhD, is currently a Professor of Speech Pathology and a practicing Medical Speech Pathologist at The Mayo Clinic. His research interests include neurologic motor speech disorders (the dysarthrias and apraxia of speech), acquired language disorders (aphasia) and acquired psychogenic speech disturbances.

The primary focus of his research has been on defining the distinguishing clinical characteristics of these neurologic disorders, establishing their neurologic correlates and refining their differential diagnosis.

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Primary Progressive Apraxia of Speech: Differential Diagnosis, Neurologic Underpinnings, and Management

Presented by Joseph Duffy, PhD, BC-ANCDS, F-ASHA

Primary Progressive Apraxia of Speech: Differential Diagnosis, Neurologic Underpinnings, and Management

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Progressive apraxia of speech (PAOS) is a speech disorder resulting from an inability to send commands necessary to direct movements for normal speech due to a neurodegenerative condition. When the primary manifestation of neurodegenerative disease is apraxia of speech, it's known as primary progressive apraxia of speech, or PPAOS. Dr. Joseph Duffy discusses the relationship between PPAOS and classifications of primary progressive aphasia, as well as other neurologic signs and symptoms that eventually emerge in people with PPAOS. Using neuroimaging and autopsy findings, Dr. Duffy examines localization and the underlying pathologies associated with PPAOS, and summarizes relevant medical treatments and behavioral therapies.

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Diagnosis and Management of Acquired Functional Speech Disorders

Presented by Joseph Duffy, PhD, BC-ANCDS, F-ASHA

Diagnosis and Management of Acquired Functional Speech Disorders

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Functional speech disorders (FSDs; previously known as psychogenic speech disorders) encompass a wide variety of speech abnormalities with an unclear etiology. FSDs are not unusual in clinical practice, but are often misdiagnosed. These disorders manifest in the form of adult-onset impairments of articulation, fluency, resonance, and prosody, as well as pseudoforeign accent, infantile speech, and mutism. Interrelated psychiatric, psychological, and neurobiological mechanisms often play an important role in FSDs. Distinguishing FSDs from other disorders is critical in developing an appropriate speech therapy plan. Several audio clip case studies demonstrate how to conduct examinations and make a differential diagnosis. This course will also cover the effective management of FSDs through assertive treatment and speech pattern modification.

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