The P300 Component of the Auditory Event-Related Potential: Interlaboratory Consistency and Test-Retest Reliability.
Abstract
The auditory evoked potential in a signal classification task using rare and frequent tones was measured by four independent laboratories, to assess the test-retest reliability and interlaboratory consistency of the P300 component. Across laboratories, 61 male subjects (three samples of military subjects, n=25, n=18, and n=8;one sample of college students,n=10), ranging between 18 and 49 years of age were tested. With few exceptions, all experimental and subject factors were controlled. At each of three electrode sites (Fz, Cz, Pz), peak amplitude, peak latency, and root-mean-square amplitude (RMS0, of the P300 were computed for each subject in test and retest conditions. Statistical analyses of the data supported three strong inferences: (1) test-retest reliability and interlaboratory consistency of P300 measures is high for RMS amplitude, lower for peak amplitude, and lowest for peak latency; (2) recordings from size Pz provide higher reliability and consistency than sites Fz or Cz; (3) the RMS amplitude of P300 is negatively correlated with reaction time to correctly classify rare tones. The data support the notion that (Event Related Potential) components, such as P300, can be reliably measured by different laboratories, with a test-retest correlation coefficient of 0.8 or higher.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1991
- Accession Number
- ADA235114
Entities
People
- Leonard J. Trejo
- Mark Inlow
- Robert R. Stanny
- Scott Makeig
- William A. Morey