Human Control in Rotated Frames: Anisotropies in the Misalignment Disturbance Function of Pitch, Roll, and Yaw

Ellis, Stephen R.; Adelstein, Bernard D.; Yeom, Kiwon

doi:10.1177/1071181312561385

Cited by 14 publications

(10 citation statements)

References 16 publications

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“…The results of both Experiment 1 and Experiment 2 indicated, when controlling for carryover effects, poorer performance for novices in the laparoscopic environment when they were exposed to sideways camera rotations of 90° and 135° for both a pointing task and a peg transfer task. These results are consistent with those of previous visuomotor rotation research (Cunningham, 1989; Ellis et al, 2012; Kim et al, 1987). This pattern may be caused by two different processes.…”

Section: Discussionsupporting

confidence: 93%

“…The most substantial performance impairment occurred for visuomotor rotations between 90° and 135° compared to 0°, 45°, and 180° rotations. These results are consistent with studies using joystick tracking tasks (Kim, Ellis, Tyler, Hannaford, & Stark, 1987; Macedo, Kaber, Endsley, Powanusorn, & Myung, 1998) as well as a straight-line pointing task in a three-dimensional virtual reality environment (Ellis, Adelstein, & Yeom, 2012). Gradual rotation of an internal mapping/reference frame is assumed to account for performatory adaptation for rotations up to 90° (Bock, Abeele, & Eversheim, 2003).…”

Section: Introductionsupporting

confidence: 90%

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Sideways Camera Rotations of 90° and 135° Result in Poorer Performance of Laparoscopic Tasks for Novices

2014

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Section: Discussionsupporting

confidence: 93%

Section: Introductionsupporting

confidence: 90%

Sideways Camera Rotations of 90° and 135° Result in Poorer Performance of Laparoscopic Tasks for Novices

2014

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“…In contrast, the 180° camera rotation resulted in superior performance compared with performance observed at lateral rotations between 90° and 135°. These findings by Klein and colleagues are generally consistent with basic research on lateral disruptions of visuomotor maps involving a computerized 2-D pointing task (Cunningham, 1989), computerized 2-D joystick tracking tasks (Macedo, Kaber, Endsley, Powanusorn, & Myung, 1998), and a virtual-reality 3-D pointing task (Ellis, Adelstein, & Yeom, 2012).…”

Section: Introductionsupporting

confidence: 70%

Assessment of Performance Carryover Effects Due to Successive Exposure to Different Lateral Camera Rotations in a Laparoscopic Training Environment

Neilson

Klein

2018

Hum Factors

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Objective The aim of this study was to assess performance carryover effects associated with different successive lateral camera rotations in the laparoscopic training environment. Background Laparoscopy requires surgeons to adapt to disruptions of visuomotor mapping. A gradual adaptation process is hypothesized to be effective up to a given rotation threshold; this threshold may have performance implications for successive exposure to different lateral camera rotations. Method Two experiments utilized a laparoscopic training task. Experiment 1 exposed novices to a subsequent rotation that was either 45° larger than one of the initial rotations of 45°, 75°, 105°, and 135° or 45° smaller than one of the initial rotations of 90°, 120°, 150°, and 180°. Experiment 2 exposed novices to either stepwise increasing rotations (0° to 180°) or stepwise decreasing rotations (180° to 0°). Results Regarding Experiment 1, performance generally improved for subsequent rotations that were 45° larger than the initial rotation, except for one condition (initial rotation, 105°; subsequent rotation, 150°). Performance generally improved for subsequent rotations that were 45° smaller than the initial rotation, except for one condition (initial rotation, 120°; subsequent rotation, 75°). Experiment 2 indicated worst performance at 120° for the increasing and decreasing conditions. This finding suggests an identical threshold for increasing and decreasing rotations, which is inconsistent with Experiment 1 results. Conclusion Improved performance due to carryover effects from successive exposure to lateral camera rotations in the laparoscopic training environment is contingent on the specific camera rotations. Application Supplementary laparoscopic training might be needed for surgeries that entail certain successive lateral camera rotations.

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“…The VE was rendered at 60 fps, with a measured full system latency of ~30 ms. (See Ellis et al, 2012).…”

Section: Participantsmentioning

confidence: 98%

“…Experiment design: A more detailed description of our general experimental procedure is provided by Ellis et al (2012) It is important to reiterate that participants were told their goal as the task got harder was to try to move as they did during initial familiarization when the task was easy. We put no specific premium on quick motion onset, speed, or accuracy.…”

Section: Experimental Virtual Environmentmentioning

confidence: 99%

Interaction of Movement Difficulty due to the Misalignment Effect and Response Latency

Ellis

Adelstein

2014

Proceedings of the Human Factors and Ergonomics Society Annual

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In previous reports we measured and analyzed the Misalignment Effect Function, a function describing the decrement in human performance due to rotation between operators' display and control axes. This prior work allowed us to determine difficulty-matched sets of rotations for a generalized 3D Fitts-like movement task. We consequently are now able to study the interaction of system latency and movement difficulty in a highly generalized way in a virtual telerobotic environment using wide variety of conditions and targets. Our targets are located on a spherical shell near our participants' starting point in a high dynamic fidelity virtual environment. Analysis of participants' ability to make movements to these targets has revealed a purely multiplicative interaction between control latency and task difficulty. Interestingly, we show that this the observed interaction supports work on Fitts' Law by E.R. Hoffmann and that it depends upon accounting for an internal human processing latency of ~250 ms. Our data suggest that the interaction varies nonlinearly due to task difficulty in a manner consistent with Hoffmann's results. We propose a descriptive equation to reflect the observed interaction that can be seen as a spatiotemporal generalization of Fitts' Law. Our results provide a basis for generalizing latency requirements for reference tasks that may be varied in difficulty in a manner analogous to the Fitts' Index of Difficulty.

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Human Control in Rotated Frames: Anisotropies in the Misalignment Disturbance Function of Pitch, Roll, and Yaw

Cited by 14 publications

References 16 publications

Sideways Camera Rotations of 90° and 135° Result in Poorer Performance of Laparoscopic Tasks for Novices

Sideways Camera Rotations of 90° and 135° Result in Poorer Performance of Laparoscopic Tasks for Novices

Assessment of Performance Carryover Effects Due to Successive Exposure to Different Lateral Camera Rotations in a Laparoscopic Training Environment

Interaction of Movement Difficulty due to the Misalignment Effect and Response Latency

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