Effects of Acquired Aphasia on the Recognition of Speech Under Energetic and Informational Masking Conditions.

Only 12 people with aphasia and 12 controls completed the task, so the findings are limited to a small sample. Participants were tested in a laboratory task with short sentences and four picture choices, which may not match everyday conversation. All participants had some hearing loss, and the study used frequency-specific gain to compensate for it, but this did not fully restore normal hearing. The aphasia group included different aphasia types and severity levels, and no clear relationship was found between test scores and performance. Some people with very mild aphasia still varied widely in their difficulty with competing speech, so mild aphasia does not rule out this problem. Only three participants showed significant left or right error biases, and the pattern did not support a clear spatial neglect explanation. All people with aphasia were at least 12 months after stroke, so results do not show what happens early in recovery.

The paper reports funding from the National Institute on Deafness and Other Communication Disorders; no author conflict-of-interest declaration is provided in the supplied text.

Do not conclude that hearing loss or poor quiet comprehension caused the aphasia group's difficulty with competing talkers. The groups had similar hearing profiles and similar quiet comprehension, and the aphasia group performed like controls in noise masking and glimpsed speech conditions. This was also a small laboratory task, not a treatment trial.