Accession Number : ADA502472


Title :   The Effects of Subthreshold Priming Alerts on Pilots in the USAARL TH-67 Microsim


Descriptive Note : Final rept.


Corporate Author : ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL WARFIGHTER PERFORMANCE AND HEALTH DIV


Personal Author(s) : Hewett, Kate J ; Estrada, Arthur ; Rath, Edna ; Cruz, Pedro A ; Kelley, Amanda M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a502472.pdf


Report Date : Jun 2009


Pagination or Media Count : 46


Abstract : The loss of situational awareness is implicated in many aviation accidents. Aircraft flight and systems instrumentation technology has advanced from dials and lighted-strip single-function instruments to visually- and cognitively-demanding multifunction displays (MFD). Twelve rotary wing pilots participated by flying one hour flights in the USAARL TH-67 Microsim. During each flight, pilots were exposed to subthreshold and suprathreshold primes via a frequency scanner. Response times were recorded. Results indicate that pilots responded to cues during the subthreshold periods in 83 of 96 presentations (86.46%). The results indicate that there was a significant association between flight experience and faster subthreshold responses [ 2(42, N = 12) = 60.00, p = .035]. The objective results indicate that a simple subthreshold priming device successfully alerted pilots. The effectiveness and acceptability of employing subthreshold visual cues was supported by the responses to the subjective post-flight questionnaire. A more comprehensive study using a high-fidelity simulator is in progress.


Descriptors :   *SITUATIONAL AWARENESS , *DISPLAY SYSTEMS , *PILOTS , REACTION(PSYCHOLOGY) , VISUAL SIGNALS , QUESTIONNAIRES , EXPERIMENTAL DESIGN , AVIATION ACCIDENTS


Subject Categories : Flight Control and Instrumentation
      Human Factors Engineering & Man Machine System


Distribution Statement : APPROVED FOR PUBLIC RELEASE