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Face-name repetition priming in semantic dementia: a case report
Marco Calabria1, Carlo Miniussi, Patrizia S Bisiacchi
1IRCCS San Giovanni di Dio Fatebenefratelli, Via Piastroni, 4 25125 Brescia, Italy.
Brain and Cognition
|March 17, 2009
Summary
Semantic dementia patients show no implicit processing benefits from repeated face-name or name-name cues. This suggests a degradation of both face and name representations in semantic memory.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Neurology
Background:
- Repetition priming (RP) measures implicit memory.
- Semantic dementia (SD), a form of frontotemporal lobar degeneration (FTLD), involves semantic memory breakdown.
- Investigating face-name representation in SD is crucial for understanding semantic deficits.
Observation:
- A single SD patient was studied using within- and cross-domain repetition priming.
- The patient's performance was compared to ten healthy controls.
- Face-name and name-name priming paradigms were utilized.
Findings:
- The SD patient exhibited no facilitation in cross-domain priming (face priming name).
- The SD patient showed no facilitation in within-domain priming (name priming name).
- Healthy controls demonstrated typical priming effects.
Implications:
- Results support the hypothesis of degraded face and name representations in SD.
- This degradation likely underlies the observed semantic deficits.
- RP may be a sensitive tool for assessing implicit processing in FTLD subtypes.
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