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Reliability of Transcription Procedures for Brain-Computer Interface Language Samples

This study assesses the reliability of transcribing language samples from brain-computer interface (BCI) communication recorded through language activity monitoring (LAM) logfiles. Veterans with amyotrophic lateral sclerosis utilized a P300-based BCI for augmentative communication, allowing us to analyze 345 daily logfile samples. Our findings revealed an excellent interrater reliability, with 97.6% accuracy for total words and 93.5% for utterances, confirming the fidelity of the transcription process. The use of LAM data facilitated the transcription of numerous samples that would be challenging with traditional audio and video methods.

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Reliability of Transcription Procedures for Brain-Computer Interface Language Samples

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  1. Reliability of brain-computer interface language sample transcriptionprocedures Katya Hill, PhD, CCC-SLP; Thomas Kovacs, MA; Sangeun Shin

  2. Aim • Test reliability of transcribing language samples of daily brain-computer interface (BCI) communication recorded as language activity monitoring (LAM) logfiles. • Relevance • Establishing reliable transcription procedures is important for reporting valid measures as study results and evaluating overall effectiveness of expressive communication.

  3. Method • Veterans with amyotrophic lateral sclerosis used P300-based BCI as augmentative and alternative communication system. • KeyLAM software recorded logfiles in 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.

  4. Results • Results on transcription of 345 daily logfile samples. • Procedure was accurate across transcribers/ raters. • Interrater reliability (frequency of agreement ratio) • Total number of words: 97.6%. • Total utterances: 93.5% . • Interjudge agreement • 100% for both measures.

  5. Conclusion • Transcribing language samples using LAM data is highly reliable and fidelity of process can be maintained. • LAM data supported transcription of large number of samples that could not have been completed using audio and video recordings.

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