TY  - JOUR
PY  - 2017//
TI  - Saliency maps for finding changes in visual scenes?
JO  - Attention, perception and psychophysics
A1  - Liesefeld, Heinrich René
A1  - Liesefeld, Anna Marie
A1  - Müller, Hermann J.
A1  - Rangelov, Dragan
SP  - 2190
EP  - 2201
VL  - 79
IS  - 7
N2  - Sudden changes in the environment reliably summon attention. This rapid change detection appears to operate in a similar fashion as pop-out in visual search, the phenomenon that very salient stimuli are directly attended, independently of the number of distracting objects. Pop-out is usually explained by the workings of saliency maps, i.e., map-like representations that code for the conspicuity at each location of the visual field. While past research emphasized similarities between pop-out search and change detection, our study highlights differences between the saliency computations in the two tasks: in contrast to pop-out search, saliency computation in change detection (i) operates independently across different stimulus properties (e.g., color and orientation), and (ii) is little influenced by trial history. These deviations from pop-out search are not due to idiosyncrasies of the stimuli or task design, as evidenced by a replication of standard findings in a comparable visual-search design. To explain these results, we outline a model of change detection involving the computation of feature-difference maps, which explains the known similarities and differences with visual search.<p />  <p>Language: en</p>
LA  - en
SN  - 1943-3921
UR  - http://dx.doi.org/10.3758/s13414-017-1383-9
ID  - ref1
ER  -