Inter-ocular and intra-ocular integration during prehension.
This study examined the inter-ocular (alternating monocular samples) and intra-ocular (monocular or binocular samples) integration during a prehensile task with a range of occlusion intervals (0-75 ms). In the first experiment, participants were uncertain regarding the impending visual condition, as well as target size and location. In the second experiment, a pre-cue on target location was provided. Data from both experiments indicated that participants modified their movement kinematics when provided with alternating monocular samples, irrespective of whether or not there was an occlusion interval. Similar adaptations were found in conditions requiring intra-ocular integration but only following the introduction of an occlusion interval. These findings are consistent with participants having a general intolerance for alternating monocular samples and as a consequence using a more cautious reach and grasp strategy.
Hansen
Steve
S
Brock University, Canada.
Hayes
Spencer
S
Bennett
Simon J
SJ
D000222:Adaptation, Physiological / Q000502:physiology; D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D007839:Functional Laterality / Q000502:physiology*; D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D013997:Time Factors; D014785:Vision, Ocular / Q000502:physiology*