TY  - JOUR
PY  - 2018//
TI  - Automated vision occlusion-timing instrument for perception-action research
JO  - Behavior research methods
A1  - Brenton, John
A1  - Müller, Sean
A1  - Rhodes, Robbie
A1  - Finch, Brad
SP  - 228
EP  - 235
VL  - 50
IS  - 1
N2  - Vision occlusion spectacles are a highly valuable instrument for visual-perception-action research in a variety of disciplines. In sports, occlusion spectacles have enabled invaluable knowledge to be obtained about the superior capability of experts to use visual information to guide actions within in-situ settings. Triggering the spectacles to occlude a performer's vision at a precise time in an opponent's action or object flight has been problematic, due to experimenter error in using a manual buttonpress approach. This article describes a new laser curtain wireless trigger for vision occlusion spectacles that is portable and fast in terms of its transmission time. The laser curtain can be positioned in a variety of orientations to accept a motion trigger, such as a cricket bowler's arm that distorts the lasers, which then activates a wireless signal for the occlusion spectacles to change from transparent to opaque, which occurs in only 8 ms. <br><br>RESULTS are reported from calculations done in an electronics laboratory, as well as from tests in a performance laboratory with a cricket bowler and a baseball pitcher, which verified this short time delay before vision occlusion. In addition, our results show that occlusion consistently occurred when it was intended-that is, near ball release and during mid-ball-flight. Only 8% of the collected data trials were unusable. The laser curtain improves upon the limitations of existing vision occlusion spectacle triggers, indicating that it is a valuable instrument for perception-action research in a variety of disciplines.<p />  <p>Language: en</p>
LA  - en
SN  - 1554-351X
UR  - http://dx.doi.org/10.3758/s13428-017-0864-z
ID  - ref1
ER  -