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Related Experiment Videos

Anosognosia in aphasics.

Y Lebrun

    Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
    |June 1, 1987
    PubMed
    Summary

    Some individuals with aphasia, particularly sensory aphasia, exhibit unawareness of their speech disorder (anosognosia). This condition impacts therapeutic interventions and requires careful consideration by speech therapists.

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    European journal of disorders of communication : the journal of the College of Speech and Language Therapists, London·1995

    Area of Science:

    • Neurolinguistics
    • Cognitive Psychology
    • Speech-Language Pathology

    Background:

    • The concept of anosognosia (unawareness of disorder) in aphasia dates back to Wernicke (1874).
    • Historically, sensory aphasics, especially jargonaphasics, were presumed to lack awareness of their disordered speech.
    • Recent research has questioned the typicality of anosognosia in Wernicke's aphasia and jargonaphasia.

    Purpose of the Study:

    • To re-evaluate the presence and nature of anosognosia in patients with sensory aphasia.
    • To explore the underlying mechanisms contributing to anosognosia in aphasia.
    • To determine the implications of anosognosia for speech therapy.

    Main Methods:

    • Behavioral analysis of sensory aphasic patients.
    • Observation of verbal output and patient's self-awareness.
    • Correlation of anosognosia with other neurological conditions.

    Main Results:

    • Some sensory aphasic patients demonstrate limited awareness of their deviant verbal output.
    • Unawareness may stem from auditory processing deficits (verbal deafness) or feedback issues.
    • Some patients may consciously ignore their speech anomalies to maintain self-image or social interaction.
    • Anosognosia is associated with various aphasia types (sensory, monophasia, modality-specific) and other neurological deficits (unilateral neglect, apraxia).

    Conclusions:

    • Anosognosia remains a relevant feature in certain types of aphasia, particularly sensory aphasia.
    • Understanding anosognosia is crucial for effective speech therapy planning and execution.
    • Therapeutic strategies must adapt to patients' level of awareness to avoid treatment failure.

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