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Reliability of brain-computer interface language sample transcription procedures

This study aims to test the reliability of transcribing language samples recorded as Language Activity Monitoring (LAM) logfiles in Brain-Computer Interface (BCI) communication. The study focuses on the importance of establishing reliable transcription procedures for reporting valid measures and evaluating the effectiveness of expressive communication. Results show high accuracy and interrater reliability in transcribing a large number of daily logfile samples. The study concludes that transcribing language samples using LAM data is highly reliable and supports transcription of samples that audio and video recordings cannot capture.

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Reliability of brain-computer interface language sample transcription procedures

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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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