Abstract
The purpose of this study was to evaluate the functional characteristics of a sample of commercial electromyographic feedback devices for the purpose of determining variability between instruments. Seventeen physical and functional characteristics (such as input impedance, filter bandwidth, and sensitivity) were evaluated on a sample of 11 instruments. Wide variability was found in several important functional characteristics. Input impedance, for example, was found to vary from 13K to more than 1 megohm and filter bandwidths ranged from 55 Hz to 2,600 Hz. Such variability makes the comparison of data from studies using different instruments quite difficult; it also suggests the need to develop equipment standards and common calibration procedures.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 281-285 |
| Number of pages | 5 |
| Journal | Behavior Research Methods & Instrumentation |
| Volume | 9 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 1977 |
| Externally published | Yes |
ASJC Scopus subject areas
- Experimental and Cognitive Psychology
- Developmental and Educational Psychology
- Arts and Humanities (miscellaneous)
- Psychology (miscellaneous)
- General Psychology