Application of Vibrotactile Stimulation to Augment Haptic Perception in Minimally Invasive Surgery
Minimally invasive surgery presents considerable perceptual limitations to the surgeons, one of which is distorted haptic feedback. Vibrotactile feedback has been shown to benefit laparoscopic tissue differentiation tasks when the amplitude or frequency of the vibrotactile signal is modulated according to force application. However, no systematic study has been done to investigate the relative contribution of multiple modulation parameters, including duty-cycle, to haptic augmentation, especially during a palpation task. A controlled experiment was conducted to explore the potential usefulness of a wearable vibrotactile sensory augmentation device, capable of delivering force information to the surgeons through the modulation of several vibration signal parameters (amplitude, frequency, duty-cycle, or their combinations), for the performance of a palpation task. Results indicated that vibrotactile sensory augmentation resulted in better performance accuracy, confidence and force applications with each additional signal parameter modulation. However, triple parameter modulation was not better than double parameter modulation. This may be due to a redundancy effect in that the force information encoded into multiple parameters has reached a maximum when double parameters were used.
Mi Zhou Caroline G. L. Cao
Department of Mechanical Engineering, Tufts University, Medford, MA
国际会议
17th World Congress on Ergonomics(第十七届国际人类工效学大会)
北京
英文
1-7
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）