TY  - GEN
A1  - Adam, Jos J.
A1  - Bovend'Eerdt, Thamar J. H.
A1  - Dooren, Fleur E. P. van
A1  - Fischer, Martin H.
A1  - Pratt, Jay
T1  - The closer the better
BT  - hand proximity dynamically affects letter recognition accuracy
T2  - Postprints der Universität Potsdam : Humanwissenschaftliche Reihe
N2  - A growing literature has suggested that processing of visual information presented near the hands is facilitated. In this study, we investigated whether the near-hands superiority effect also occurs with the hands moving. In two experiments, participants performed a cyclical bimanual movement task requiring concurrent visual identification of briefly presented letters. For both the static and dynamic hand conditions, the results showed improved letter recognition performance with the hands closer to the stimuli. The finding that the encoding advantage for near-hand stimuli also occurred with the hands moving suggests that the effect is regulated in real time, in accordance with the concept of a bimodal neural system that dynamically updates hand position in external space.
T3  - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 607 
KW  - perception and action
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-432963
SN  - 1866-8364
IS  - 607
SP  - 1533
EP  - 1538
ER  - 
TY  - GEN
A1  - Wiemers, Michael
A1  - Fischer, Martin H.
T1  - Effects of hand proximity and movement direction in spatial and temporal gap discrimination
T2  - Postprints der Universität Potsdam : Humanwissenschaftliche Reihe
N2  - Previous research on the interplay between static manual postures and visual attention revealed enhanced visual selection near the hands (near-hand effect). During active movements there is also superior visual performance when moving toward compared to away from the stimulus (direction effect). The "modulated visual pathways" hypothesis argues that differential involvement of magno- and parvocellular visual processing streams causes the near-hand effect. The key finding supporting this hypothesis is an increase in temporal and a reduction in spatial processing in near-hand space (Gozli et al., 2012). Since this hypothesis has, so far, only been tested with static hand postures, we provide a conceptual replication of Gozli et al.'s (2012) result with moving hands, thus also probing the generality of the direction effect. Participants performed temporal or spatial gap discriminations while their right hand was moving below the display. In contrast to Gozli et al (2012), temporal gap discrimination was superior at intermediate and not near hand proximity. In spatial gap discrimination, a direction effect without hand proximity effect suggests that pragmatic attentional maps overshadowed temporal/spatial processing biases for far/near-hand space.
T3  - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 428 
KW  - attention
KW  - perception and action
KW  - two visual systems
KW  - visual perception
KW  - movement preparation
Y1  - 2018
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-406568
IS  - 428
ER  -