Comparison of Reaction Response Time between Hand and Foot Controlled Devices in Simulated Microsurgical Testing

Pfister, Marcel; Lue, Jaw-Chyng; Stefanini, Francisco Rosa; Falabella, Paulo; Dustin, Laurie; Koss, Michael; Humayun, Mark S.

doi:10.1155/2014/769296

Cited by 24 publications

(27 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Since the conduction velocity in the motor pathways and peripheral nerves can reach several tens of meters per second, RT may slightly increase if the response requires distal body segments. Under the conditions of hand and foot contact with the timer, Pfister et al (2014) reported a significant difference between hand and foot simple RT of about 10 ms, mean data being 318 and 329 ms, respectively. Removing the delay separating foot RT from hand RT can eliminate this difference.…”

Section: Discussionmentioning

confidence: 88%

Effects of Age and Task Load on Drivers’ Response Accuracy and Reaction Time When Responding to Traffic Lights

Salvia

Petit

Champely

et al. 2016

Front. Aging Neurosci.

View full text Add to dashboard Cite

Due to population aging, elderly drivers represent an increasing proportion of car drivers. Yet, how aging alters sensorimotor functions and impacts driving safety remains poorly understood. This paper aimed at assessing to which extent elderly drivers are sensitive to various task loads and how this affects the reaction time (RT) in a driving context. Old and middle-aged people completed RT tasks which reproduced cognitive demands encountered while driving. Participants had to detect and respond to traffic lights or traffic light arrows as quickly as possible, under three experimental conditions of incremental difficulty. In both groups, we hypothesized that decision-making would be impacted by the number of cues to be processed. The first test was a simple measure of RT. The second and third tests were choice RT tasks requiring the processing of 3 and 5 cues, respectively. Responses were collected within a 2 s time-window. Otherwise, the trial was considered a no-response. In both groups, the data revealed that RT, error rate (incorrect answers), and no-response rate increased along with task difficulty. However, the middle-aged group outperformed the elderly group. The RT difference between the two groups increased drastically along with task difficulty. In the third test, the rate of no-response suggested that elderly drivers needed more than 2 s to process complex information and respond accurately. Both prolonged RT and increased no-response rate, especially for difficult tasks, might attest an impairment of cognitive abilities in relation to aging. Accordingly, casual driving conditions for young drivers may be particularly complex and stressful for elderly people who should thus be informed about the effects of normal aging upon driving.

show abstract

Section: Discussionmentioning

confidence: 88%

Effects of Age and Task Load on Drivers’ Response Accuracy and Reaction Time When Responding to Traffic Lights

Salvia

Petit

Champely

et al. 2016

Front. Aging Neurosci.

View full text Add to dashboard Cite

show abstract

“…The same is true for operating the foot pedal. Furthermore, reaction times are approximately 10ms slower for feet than for hands (Pfister et al, 2014). Therefore, the timing of urge intensity and mental compulsions in the range of seconds should be regarded with some caution and the results should be confirmed in an independent study.…”

Section: Evaluation Of the Real-time Urge Monitor And Limitations Of mentioning

confidence: 93%

The temporal relationship between premonitory urges and covert compulsions in patients with obsessive-compulsive disorder

Brandt

Hermanns

Beck

et al. 2018

Psychiatry Research

View full text Add to dashboard Cite

Recent studies in patients with obsessive-compulsive disorder (OCD) have shown that many compulsions are associated with urges rather than obsessions. Premonitory urges are uncomfortable sensory feelings or a rising inner tension, often likened to the urge to scratch, yawn or blink. We studied premonitory urges preceding mental compulsions in 19 patients with OCD and preceding eye blinks in 16 healthy controls. Urge intensity was assessed continuously over 20 min using a real-time urge intensity monitor; compulsions and blinks were measured as discrete events in a free compulsion/blinking and a compulsion/blink suppression condition. Urge intensity showed an inverted U-shaped relationship (increase then decrease) around compulsions within a time-window of approximately 60 s in patients with OCD and within 13 s around blinks in healthy controls. Urge intensity was higher during compulsion / blink suppression and varied more independently of compulsion execution in patients with OCD. There is a close temporal relationship between premonitory sensations and compulsion execution that changes when compulsions are suppressed, indicating that urge intensity might drive the execution of and is then alleviated by compulsions. Suppression weakens the association between urge intensity and compulsion execution.

show abstract

“…We propose tracking the foot movements for controlling the displacements of the third hand. Foot pedals are widely used for vitrectomy in microsurgery [ 33 ] and laparoscopic surgery, dentistry, etc. for turning on/off a device, as well as for commanding the endoscope movements in laparoscopic surgery.…”

Section: Introductionmentioning

confidence: 99%

Control of a Supernumerary Robotic Hand by Foot: An Experimental Study in Virtual Reality

et al. 2015

View full text Add to dashboard Cite

In the operational theater, the surgical team could highly benefit from a robotic supplementary hand under the surgeon’s full control. The surgeon may so become more autonomous; this may reduce communication errors with the assistants and take over difficult tasks such as holding tools without tremor. In this paper, we therefore examine the possibility to control a third robotic hand with one foot’s movements. Three experiments in virtual reality were designed to assess the feasibility of this control strategy, the learning curve of the subjects in different tasks and the coordination of foot movements with the two natural hands. Results show that the limbs are moved simultaneously, in parallel rather than serially. Participants’ performance improved within a few minutes of practice without any specific difficulty to complete the tasks. Subjective assessment by the subjects indicated that controlling a third hand by foot has been easy and required only negligible physical and mental efforts. The sense of ownership was reported to improve through the experiments. The mental burden was not directly related to the level of motion required by a task, but depended on the type of activity and practice. The most difficult task was moving two hands and foot in opposite directions. These results suggest that a combination of practice and appropriate tasks can enhance the learning process for controlling a robotic hand by foot.

show abstract

Comparison of Reaction Response Time between Hand and Foot Controlled Devices in Simulated Microsurgical Testing

Cited by 24 publications

References 8 publications

Effects of Age and Task Load on Drivers’ Response Accuracy and Reaction Time When Responding to Traffic Lights

Effects of Age and Task Load on Drivers’ Response Accuracy and Reaction Time When Responding to Traffic Lights

The temporal relationship between premonitory urges and covert compulsions in patients with obsessive-compulsive disorder

Control of a Supernumerary Robotic Hand by Foot: An Experimental Study in Virtual Reality

Contact Info

Product

Resources

About