Hgm. Bohnen et al., SAMPLING BEHAVIOR IN A 4 INSTRUMENT MONITORING TASK - EFFECTS OF SIGNAL BANDWIDTH AND NUMBER OF EVENTS PER SIGNAL, IEEE transactions on systems, man and cybernetics. Part A. Systems and humans, 26(4), 1996, pp. 413-422
Citations number
22
Categorie Soggetti
System Science",Ergonomics,"Computer Science Cybernetics
This study investigates the effect of global signal characteristics, s
uch as bandwidth and number of events on human sampling behavior. It a
lso examines whether the influence of these characteristics on samplin
g strategy is affected by local (actually observed) signal features, s
uch as the degree with which a sampled signal value falls short of an
event region and the rate of change. In the present study four indepen
dent, numerically displayed signals were used; two different bandwidth
s and two different event numbers were chosen. To take a sample, subje
cts had to use a mouse. The mouse key responses were used as an index
of sampling. The study demonstrates that both bandwidth and number of
events equally affected the distribution of samples over signals. In a
ddition, it shows that global signal characteristics determine samplin
g behavior less prominently when the attentional demands brought about
by the local signal features become of greater importance. This indic
ates that not predictability as governed by global signal characterist
ics as such, but rather predictability given certain local signal feat
ures is a crucial factor in determining sampling behavior.