Related Experiment Video
Updated: Jun 27, 2026
Utilizing Repetitive Transcranial Magnetic Stimulation to Improve Language Function in Stroke Patients with Chronic Non-fluent Aphasia
Published on: July 2, 2013
Early auditory middle latency evoked potentials correlates with recovery from aphasia after stroke
M C Rojas Sosa1, M I Fraire Martínez, J L Olvera Gómez
1Unidad de Medicina Física y Rehabilitación siglo XXI, Instituto Mexicano del Seguro Social, Mexico D.F.
Objective:
To assess the relationship between the latency of Pa and Nb peaks of the middle latency auditory responses and the score on the Boston Diagnostic Aphasia Examination, during a 6-month follow-up after stroke in the territory of the left mid cerebral artery.
Methods:
The middle latency auditory potentials of 10 aphasic stroke patients were recorded within the first 3 days post-onset, at the time of hospital discharge and 2, 4 and 6 months afterwards, along with that of 30 control subjects; in patients, the evolution of aphasia was evaluated using the Boston Diagnostic Aphasia Examination score.
Results:
During follow-up decreasing potential latencies and increasing language scores were observed (ANCOVA, R(2) 0.75, p<0.01); the Nb peak latency recorded during the first days after stroke was related to the language score difference after 6 months (Pearson, r=0.66, p<0.01).
Conclusions:
In patients with aphasia after stroke, the auditory electrical response recorded at hospital discharge, after stroke is related to their recovery from aphasia, evaluated by the Boston Diagnostic Aphasia Examination.
Significance:
Early middle latency auditory evoked responses may have a prognostic value in aphasic stroke patients.
