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Biomedical subjects

L F Hughes

Publications and source records attributed to L F Hughes.

23 records · Page 2Linked to original sources
PubMedDate not supplied

Temporal aspects of dichotic listening in brain-damaged subjects.

Thirteen cortically injured subjects were tested in a dichotic temporal order judgment task using speech and nonspeech stimuli. Subjects were required only to judge which ear was stimulated first on each trial. All were young men and neurologically normal before receiving missile wounds. Subjects with injuries outside the temporal and frontal lobes performed the dichotic tasks at levels comparable to that of neurologically normal subjects. In contrast, subjects with temporal lobe lesions performed at near chance levels on all of the conditions. Individuals with frontal lobe damage showed moderate impairment on the dichotic tasks.

Acoustic Stimulation↗
PubMedDate not supplied

The measurement of performance asymmetries with dichotic stimulus presentation.

The failure to include only relevant observations in the assessment of laterality has resulted in a proliferation of post hoc attempts to "correct" laterality measures influenced by "overall performance level." The inclusion of information from trials in which both ears were either correct or in error contaminates the laterality measure (not overall performance per se). The use of single correct trial information obviates the need for adjusting laterality measures and lends itself to standard statistical procedures.

Auditory Perception↗