Discerning Ambient/Focal Attention with Coefficient K

Krzysztof Krejtz , Andrew Duchowski , Izabela Krejtz , Agnieszka Szarkowska , Agata Kopacz

Abstract

We 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).
Author Krzysztof Krejtz (Wydział Psychologii)
Krzysztof Krejtz,,
- Wydział Psychologii
, Andrew Duchowski
Andrew Duchowski,,
-
, Izabela Krejtz (Wydział Psychologii)
Izabela Krejtz,,
- Wydział Psychologii
, Agnieszka Szarkowska
Agnieszka Szarkowska,,
-
, Agata Kopacz
Agata Kopacz,,
-
Journal seriesACM Transactions on Applied Perception, ISSN 1544-3558, (A 25 pkt)
Issue year2016
Vol13
No3
Pages1-11
Publication size in sheets0.3
Keywords in EnglishAmbient-focal attention, serial versus parallel search, visual attention dynamics
ASJC Classification3205 Experimental and Cognitive Psychology; 1700 General Computer Science; 2614 Theoretical Computer Science
DOIDOI:10.1145/2896452
URL http://doi.acm.org/10.1145/2896452
Languageen angielski
File
Oświadczenie_publ_2016-Baza wiedzy.doc 55 KB
kkrejjtz_osw_2016.pdf 154 KB
Score (nominal)35
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2016 = 0.773; WoS Impact Factor: 2016 = 1.25 (2) - 2016=1.239 (5)
Citation count*38 (2020-09-25)
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