Mary has a little chair: Eliciting noun-modifier phrases in individuals with acute post-stroke aphasia.
Melissa D Stockbridge, William Matchin, Elizabeth DeLuque and 4 others
PMID 38654898WHAT IT FOUND
The MorGen test detects subtle language deficits in acute stroke patients who score normally on standard assessments.
These patients specifically struggle with adjectives, such as size and color, which are not directly tested by the Western Aphasia Battery. This suggests adjectives should be assessed even when traditional tests show no impairment.
Key findings
01Individuals with acute stroke performed more poorly than healthy controls on all seven MorGen constituent scores, even when controlling for education.
02Patients who scored 'within functional limits' on the Western Aphasia Battery still showed significant deficits in adjective production compared to controls, despite performing normally on nouns and bound morphemes.
03Lesions in the posterior cerebral artery territory were associated with poorer performance in nouns, size, and color adjectives, while anterior cerebral artery lesions were associated with poorer number performance.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The sample size for specific aphasia subtypes was too small for individual analysis, requiring grouping into fluent, non-fluent, and WFL categories. Education levels differed significantly between the stroke and control groups, requiring statistical control which may not fully account for all confounds. The MorGen exposure to each target varies (e.g., plural -s is targeted 31 times, number only 8 times), which prevents direct comparison of difficulty between constituent skills. Clinical MRIs have lower resolution than research imaging, limiting the precision of lesion-symptom mapping. The study did not track recovery over time, so it is unclear if these acute deficits persist or resolve.
Declared interests
No specific conflicts of interest or funding sources were disclosed in the provided text.
The easy way to misread this
Do not assume the MorGen is a superior diagnostic tool for all aphasia types. It is a research instrument that requires specific training and may not be widely available. Furthermore, the deficits found in 'within functional limits' patients were subtle and specific to adjectives; do not over-interpret these findings as evidence of severe global language impairment in patients who pass standard screenings.