(Subkortikal sensorische Aphasie,
pure word deafness)
- male; 70; manager; multilingual:
- German (native)
- Spanish (30 years Venezuela)
- English (10 years USA)
- auditory comprehension and repetition of heard speech greatly limited
- audiometric tests - normal
- comprehension of non-verbal auditory stimuli - normal
- the ability to speak, read and write - unaffected
- tendency to (unconciously) use lip-reading as an aid in auditory comprehension (careful observation of the face of the examiner)
- auditory comprehension is variant and context-related: it is superior when the patient introduces the subject of conversation himself, and it drops drastically when the examiner suddenly changes the topic
- isolated words are less easily identified than words embedded in sentences
Die folgenden Audioaufnahmen sind nur für registrierte Benutzer zugänglich.
- spontaneous speech, german [wav, 103.01 sec]
- spontaneous speech, spanish [wav, 27.52 sec]
- repetition, german [wav, 40.15 sec]
- repetition, english [wav, 34.24 sec]
- repetition, spanish [wav, 25.46 sec]
- reading, german [wav, 17.8 sec]
- reading, spanish [wav, 12.33 sec]
The following tests were applied 1 month, 6 months, 8 months and 12 months post onset:
Phoneme discrimination test (forty item CV test)
- 20 identical pairs (e.g. /ta/ /ta/)
- 10 phon. distant pairs (3 feature difference)
- 10 phon. close pairs (1 feature difference)
W.H.'s performance (69% - 73% correct) well below lower end of the normal range for his age group (89%). The results were stable over all 4 tests.
Phoneme restoration test
14 short stories with an appropriate and an inappropriate conclusion expressed by a minimal pair (e.g. klettern - kleckern). Word frequency, word length, phoneme class, and the position for the restored phoneme were varied. Signal editing: whole phoneme deleted, burst deleted, transition deleted, only the transient present.
Controls follow auditory cues (if any), W.H. follows only the contextual cues. The results were stable over all 4 tests.
Bimodal perception test (McGurk effect)
- 5 synthetic auditory syllables (/ba/.../da/) are combined with 5 synthetic visual syllables (/ba/.../da/) = 25 stimuli
- In addition audible and visible speech is presented alone = 10 stimuli
- 35 stimuli in six random sequences
W.H. relies on visible speech, controls rely on both types of cues. The results were stable over all 4 tests.
Intonation (Lx) perception test
F0 cues (Lx signal) for male voice, female voice, assertion, question, verification, topic change, aspect change, agreement, dissonance, etc., were presented in 6 random sequences.
W.H. identifies the intonational cues to discourse structure much better than the controls do (e.g. topic change 67% W.H. - 24% C.). The results were stable over all 4 tests.