Discerning Ambient/Focal Attention with Coefficient K
Krzysztof Krejtz , Andrew Duchowski , Izabela Krejtz , Agnieszka Szarkowska , Agata Kopacz
AbstractWe introduce coefficient K, defined on a novel parametric scale, derived from processing a traditionally eye-tracked time course of eye movements. Positive and negative ordinates of K indicate focal or ambient viewing, respectively, while the abscissa serves to indicate time, so that K acts as a dynamic indicator of fluctuation between ambient/focal visual behavior. The coefficient indicates the difference between fixation duration and its subsequent saccade amplitude expressed in standard deviation units, facilitating parametric statistical testing. To validate K empirically, we test its utility by capturing ambient and focal attention during serial and parallel visual search tasks (Study 1). We then show how K quantitatively depicts the difference in scanning behaviors when attention is guided by audio description during perception of art (Study 2).
|Journal series||ACM Transactions on Applied Perception, ISSN 1544-3558, (A 25 pkt)|
|Publication size in sheets||0.3|
|Keywords in English||Ambient-focal attention, serial versus parallel search, visual attention dynamics|
|ASJC Classification||; ;|
|Publication indicators||: 2016 = 0.773; : 2016 = 1.25 (2) - 2016=1.239 (5)|
|Citation count*||38 (2020-09-25)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.