Intermittent stimulation delays adaptation to electrocutaneous sensory feedback

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Electrotactile displays deliver information to the user by means of electrocutaneous stimulation. If such displays are used in prostheses, the functionality depends on long term stability of this information channel. The perceived sensation, however, decays within 15 min due to central adaptation if the stimulation is applied continuously and at constant strength. In this study, the effects of stimulus amplitude and intermittent stimulation on adaptation were investigated in ten healthy subjects. The perceived sensation was recorded during 15 min of constant stimulation using a visual analog scale (VAS). The sensation level with time thus measured were parameterized by the initial sensation level, the time constant of decay and the end sensation level after fitting of an exponential function through the VAS data. The time constant increased significantly when applying a high stimulation level (at 80% of the range between sensation and pain thresholds) if compared with lower levels of stimulation (20% and 50%) during continuous stimulation. Intermittent stimulation at this high stimulation level significantly increased end sensation level.
Original languageEnglish
Pages (from-to)435-441
Number of pages7
JournalIEEE transactions on neural systems and rehabilitation engineering
Volume15
DOIs
Publication statusPublished - Sep 2007

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Sensory feedback
Sensory Feedback
Display devices
Exponential functions
Prosthetics
Visual Analog Scale
Data Display
Pain Threshold
Prostheses and Implants
Healthy Volunteers

Keywords

  • BSS-Central mechanisms underlying chronic pain

Cite this

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title = "Intermittent stimulation delays adaptation to electrocutaneous sensory feedback",
abstract = "Electrotactile displays deliver information to the user by means of electrocutaneous stimulation. If such displays are used in prostheses, the functionality depends on long term stability of this information channel. The perceived sensation, however, decays within 15 min due to central adaptation if the stimulation is applied continuously and at constant strength. In this study, the effects of stimulus amplitude and intermittent stimulation on adaptation were investigated in ten healthy subjects. The perceived sensation was recorded during 15 min of constant stimulation using a visual analog scale (VAS). The sensation level with time thus measured were parameterized by the initial sensation level, the time constant of decay and the end sensation level after fitting of an exponential function through the VAS data. The time constant increased significantly when applying a high stimulation level (at 80{\%} of the range between sensation and pain thresholds) if compared with lower levels of stimulation (20{\%} and 50{\%}) during continuous stimulation. Intermittent stimulation at this high stimulation level significantly increased end sensation level.",
keywords = "BSS-Central mechanisms underlying chronic pain",
author = "Buma, {Dorindo G.} and Buitenweg, {Jan R.} and Veltink, {Peter H.}",
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Intermittent stimulation delays adaptation to electrocutaneous sensory feedback. / Buma, Dorindo G.; Buitenweg, Jan R.; Veltink, Peter H.

In: IEEE transactions on neural systems and rehabilitation engineering, Vol. 15, 09.2007, p. 435-441.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Intermittent stimulation delays adaptation to electrocutaneous sensory feedback

AU - Buma, Dorindo G.

AU - Buitenweg, Jan R.

AU - Veltink, Peter H.

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AB - Electrotactile displays deliver information to the user by means of electrocutaneous stimulation. If such displays are used in prostheses, the functionality depends on long term stability of this information channel. The perceived sensation, however, decays within 15 min due to central adaptation if the stimulation is applied continuously and at constant strength. In this study, the effects of stimulus amplitude and intermittent stimulation on adaptation were investigated in ten healthy subjects. The perceived sensation was recorded during 15 min of constant stimulation using a visual analog scale (VAS). The sensation level with time thus measured were parameterized by the initial sensation level, the time constant of decay and the end sensation level after fitting of an exponential function through the VAS data. The time constant increased significantly when applying a high stimulation level (at 80% of the range between sensation and pain thresholds) if compared with lower levels of stimulation (20% and 50%) during continuous stimulation. Intermittent stimulation at this high stimulation level significantly increased end sensation level.

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