Details:

Creators:
Foyle, David C. ; McCann, Robert S. ; Shelden, Stephen G.
Foyle, David C. ; McCann, Robert S. ; Shelden, Stephen G. Less -
Corporate Contributors:
Ames Research Center
Subject/TRT Terms:
[+]
Attention Attentional Tunneling Cognition Differential Motion Head Up Displays Human Factors Information Display Systems Motion Perception Research Scene-linked Heads Up Display (HUD) Symbology Superimposed Symbology
DOI:
https://doi.org/10.21949/1403577
Resource Type:
Proceedings
Corporate Publisher:
United States. National Aeronautics and Space Administration. Operations Branch
NTL Classification:
NTL-AVIATION-Aviation Human Factors
Abstract:
The head-up display (HUD) has been shown to be a superior presentation method

for flight path symbology over that of traditional flight director. Recent

studies, however, have shown that there are specific performance problems

associated with HUDs. During simulated landing with superimposed HUD symbology,

pilots took 2.5 seconds longer to respond to an unexpected runway incursion

when the symbology was presented head-up than when head-down. This extends and

replicates previous research showing that superimposed HUD symbology may lead to

attentional tunneling and inefficient processing of the out-the-window scene.

In operational usage, superimposed symbology on a HUD is mostly presented at a

fixed, specific location on the HUD combiner, while the world scene behind it

pitches, yaws, and rolls in response to aircraft motion. McCann, Lynch, Foyle

and Johnston (1993) measured the time it takes to switch between the world

scene and the superimposed HUD symbology. They found that differential motion

between the superimposed HUD symbology and the out-the-window scene led to

increased attentional switching time, and concluded that this differential

motion may be the primary driver behind attentional tunneling. If the primary

cause of attentional tunneling is differential motion between the HUD symbology

and the world, then removing the differential motion cues should minimize the

attentional tunneling problem. One design option that achieves this goal is to

replace conventional HUD symbols with virtual symbols that appear to be

physically part of the world. Although rendered in graphics on the HUD, these

"scene-linked" symbols are drawn, and move, as virtual objects in the

out-the-window scene. As the aircraft moves through the world, the

scene-linked symbols undergo the positional visual transformations as real

objects. There are no differential motion cues to cause the visual system to

interpret the virtual symbols as separate from the world. In the absence of

these cues, attentional tunneling should be prevented, enhancing the ability

to process scene-linked HUD symbology in parallel with real-world information.

6p.


Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:83e1feeb366b4332ac2e920d6eb4e98fba0bbd4dde4318b85329123211a8bfd2
Download URL:
https://rosap.ntl.bts.gov/view/dot/12816/dot_12816_DS1.pdf
File Type:

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