Article

We tested the reliability of transcribing language samples of daily
brain-computer interface (BCI) communication recorded as language activity
monitoring (LAM) logfiles. This study determined interrater reliability and
interjudge agreement for transcription of communication of veterans with
amyotrophic lateral sclerosis using a P300-based BCI as an augmentative and
alternative communication (AAC) system. KeyLAM software recorded logfiles in a
universal logfile format during use of BCI-controlled email and word processing
applications. These logfiles were encrypted and sent to our laboratory for
decryption, transcription, and analysis. The study reports reliability results on
transcription of 345 daily logfile samples. The procedure was found to be
accurate across transcribers/raters. Frequency of agreement ratios of 97.6% for
total number of words and 93.5% for total utterances were found as measures of
interrater reliability. Interjudge agreement was 100% for both measures. The
results indicated that transcribing language samples using LAM data is highly
reliable and the fidelity of the process can be maintained. LAM data supported
the transcription of a large number of samples that could not have been completed
using audio and video recordings of AAC speakers. This demonstrated efficiency of
LAM tools to measure language performance benefits to BCI research and clinical
communities.

Langue : ANGLAIS