TY  - JOUR
A1  - Trukenbrod, Hans Arne
A1  - Engbert, Ralf
T1  - ICAT: a computational model for the adaptive control of fixation durations
JF  - Psychonomic bulletin & review : a journal of the Psychonomic Society
N2  - Eye movements depend on cognitive processes related to visual information processing. Much has been learned about the spatial selection of fixation locations, while the principles governing the temporal control (fixation durations) are less clear. Here, we review current theories for the control of fixation durations in tasks like visual search, scanning, scene perception, and reading and propose a new model for the control of fixation durations. We distinguish two local principles from one global principle of control. First, an autonomous saccade timer initiates saccades after random time intervals (local-I). Second, foveal inhibition permits immediate prolongation of fixation durations by ongoing processing (local-II). Third, saccade timing is adaptive, so that the mean timer value depends on task requirements and fixation history (Global). We demonstrate by numerical simulations that our model qualitatively reproduces patterns of mean fixation durations and fixation duration distributions observed in typical experiments. When combined with assumptions of saccade target selection and oculomotor control, the model accounts for both temporal and spatial aspects of eye movement control in two versions of a visual search task. We conclude that the model provides a promising framework for the control of fixation durations in saccadic tasks.
KW  - Computational modeling
KW  - Eye movements
KW  - Adaptive control
KW  - Fixation duration
Y1  - 2014
U6  - https://doi.org/10.3758/s13423-013-0575-0
SN  - 1069-9384
SN  - 1531-5320
VL  - 21
IS  - 4
SP  - 907
EP  - 934
PB  - Springer
CY  - New York
ER  - 
TY  - JOUR
A1  - Hartmann, Matthias
A1  - Martarelli, Corinna S.
A1  - Mast, Fred W.
A1  - Stocker, Kurt
T1  - Eye movements during mental time travel follow a diagonal line
JF  - Consciousness and cognition
N2  - Recent research showed that past events are associated with the back and left side, whereas future events are associated with the front and right side of space. These spatial-temporal associations have an impact on our sensorimotor system: thinking about one's past and future leads to subtle body sways in the sagittal dimension of space (Miles, Nind, & Macrae, 2010). In this study we investigated whether mental time travel leads to sensorimotor correlates in the horizontal dimension of space. Participants were asked to mentally displace themselves into the past or future while measuring their spontaneous eye movements on a blank screen. Eye gaze was directed more rightward and upward when thinking about the future than when thinking about the past. Our results provide further insight into the spatial nature of temporal thoughts, and show that not only body, but also eye movements follow a (diagonal) "time line" during mental time travel. (C) 2014 Elsevier Inc. All rights reserved.
KW  - Mental time travel
KW  - Eye movements
KW  - Mental time line
KW  - Spatial-temporal association
KW  - Future
KW  - Past
KW  - Embodied cognition
KW  - Metaphors
KW  - Mental number line
Y1  - 2014
U6  - https://doi.org/10.1016/j.concog.2014.09.007
SN  - 1053-8100
SN  - 1090-2376
VL  - 30
SP  - 201
EP  - 209
PB  - Elsevier
CY  - San Diego
ER  - 
TY  - JOUR
A1  - Apel, Jens K.
A1  - Revie, Gavin F.
A1  - Cangelosi, Angelo
A1  - Ellis, Rob
A1  - Goslin, Jeremy
A1  - Fischer, Martin H.
T1  - Attention deployment during memorizing and executing complex instructions
JF  - Experimental brain research
N2  - We investigated the mental rehearsal of complex action instructions by recording spontaneous eye movements of healthy adults as they looked at objects on a monitor. Participants heard consecutive instructions, each of the form "move [object] to [location]''. Instructions were only to be executed after a go signal, by manipulating all objects successively with a mouse. Participants re-inspected previously mentioned objects already while listening to further instructions. This rehearsal behavior broke down after 4 instructions, coincident with participants' instruction span, as determined from subsequent execution accuracy. These results suggest that spontaneous eye movements while listening to instructions predict their successful execution.
KW  - Assembly task
KW  - Eye movements
KW  - Overt attention
KW  - Rehearsal
KW  - Sequential instruction
KW  - Working memory
Y1  - 2011
U6  - https://doi.org/10.1007/s00221-011-2827-4
SN  - 0014-4819
VL  - 214
IS  - 2
SP  - 249
EP  - 259
PB  - Springer
CY  - New York
ER  -