Sign language acquisition by a global aphasic

Area of Science:

• Neuroscience
• Speech-Language Pathology
• Neurolinguistics

Background:

• Global aphasia, often resulting from left hemisphere stroke, severely impairs language comprehension and production.
• Hemiplegia, a common consequence of stroke, further complicates rehabilitation efforts.
• Restoring communicative function in orally aphasic patients presents significant challenges.

Purpose of the Study:

• To investigate the efficacy of Total Communication in restoring language function in a patient with global aphasia and hemiplegia.
• To assess the impact of a multimodal communication approach on learning ability and memory in a stroke survivor.
• To explore the potential for improving communicative abilities despite persistent oral aphasia.

Main Methods:

• A single-subject design was employed, focusing on a male patient with left hemisphere damage, hemiplegia, and global aphasia.
• The intervention utilized Total Communication, integrating standardized sign language with speech.
• Progress was monitored through observation of language acquisition, sentence complexity, and self-correction behaviors.

Main Results:

• Initial language learning was slow with memory lapses, but learning ability and memory significantly improved over time.
• The patient successfully acquired receptive and expressive language skills, progressing to complex, syntactically correct sentences.
• The subject demonstrated the ability to self-correct errors and comprehend simple written sentences.

Conclusions:

• Total Communication can be an effective strategy for restoring communicative function in patients with severe aphasia post-stroke.
• Finding suitable alternative means of expression, like sign language, can facilitate language recovery even when oral expression remains impaired.
• This case study suggests that significant improvements in language and memory are achievable in stroke survivors with global aphasia.