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Quantitative eeg patterns of differential in-flight workload
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Sterman, M. B. Mann, C. A. Kaiser, D. A. |
| Copyright Year | 1993 |
| Description | Four test pilots were instrumented for in-flight EEG recordings using a custom portable recording system. Each flew six, two minute tracking tasks in the Calspan NT-33 experimental trainer at Edwards AFB. With the canopy blacked out, pilots used a HUD display to chase a simulated aircraft through a random flight course. Three configurations of flight controls altered the flight characteristics to achieve low, moderate, and high workload, as determined by normative Cooper-Harper ratings. The test protocol was administered by a command pilot in the back seat. Corresponding EEG and tracking data were compared off-line. Tracking performance was measured as deviation from the target aircraft and combined with control difficulty to achieve an estimate of 'cognitive workload'. Trended patterns of parietal EEG activity at 8-12 Hz were sorted according to this classification. In all cases, high workload produced a significantly greater suppression of 8-12 Hz activity than low workload. Further, a clear differentiation of EEG trend patterns was obtained in 80 percent of the cases. High workload produced a sustained suppression of 8-12 Hz activity, while moderate workload resulted in an initial suppression followed by a gradual increment. Low workload was associated with a modulated pattern lacking any periods of marked or sustained suppression. These findings suggest that quantitative analysis of appropriate EEG measures may provide an objective and reliable in-flight index of cognitive effort that could facilitate workload assessment. |
| File Size | 485389 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940007056 |
| Archival Resource Key | ark:/13960/t38101128 |
| Language | English |
| Publisher Date | 1993-02-01 |
| Access Restriction | Open |
| Subject Keyword | Man/system Technology And Life Support Flight Characteristics Test Pilots Visual Tasks Pilot Performance Workloads Psychophysiology Training Devices Flight Simulators Electroencephalography Flight Control Tracking Position Quantitative Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
