Category specific recall in acute stroke: a case with letter speech

Area of Science:

• Neurolinguistics
• Neuroscience
• Speech Pathology

Background:

• Category selective recall deficits in spontaneous speech post-stroke are uncommon.
• Previous research noted transient number speech in acute left hemispheric stroke, potentially linked to multilingualism and mathematical skills.

Purpose of the Study:

• To report a novel case of transient random letter utterances in spontaneous speech after stroke.
• To explore the phenomenon's relationship with linguistic models and neurobiological underpinnings.

Main Methods:

• Case study of a patient experiencing transient speech alterations post-stroke.
• Clinical observation of speech patterns, including mutism and subsequent aphasia development.
• Literature review on category-specific speech disorders and their correlates.

Main Results:

• The patient exhibited a transient phase of randomly selected letter utterances.
• This episode was preceded by mutism and progressed to Wernicke's aphasia over days.
• The findings add to rare reports of category selective speech deficits.

Conclusions:

• Transient letter-utterance aphasia represents a rare, distinct speech phenomenon post-stroke.
• The case supports the hypothesis of specific linguistic processing deficits.
• Further research is needed to elucidate the neuroanatomical and neurophysiological basis of such selective speech impairments.