The effect of 30 minutes of peripheral electrical stimulation on excitability of the sensorimotor cortices and sensory threshold of healthy adults

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aut.embargoNoen_NZ
aut.thirdpc.containsNoen_NZ
aut.thirdpc.permissionNoen_NZ
aut.thirdpc.removedNoen_NZ
dc.contributor.advisorTaylor, Denise
dc.contributor.advisorLewis, Gwyn
dc.contributor.authorTowersey, Nicola Carolyn Mary
dc.date.accessioned2012-09-06T00:02:33Z
dc.date.available2012-09-06T00:02:33Z
dc.date.copyright2012
dc.date.created2012
dc.date.issued2012
dc.date.updated2012-09-05T23:27:33Z
dc.description.abstractAim: To evaluate the effect of peripheral electrical stimulation (PES), with directed or diverted attention, on excitability of the sensorimotor cortices and sensory threshold in healthy adults. Study design: Within participant repeated measures design. Motor evoked potentials (MEP), somatosensory evoked potentials (SSEP) and sensory threshold were measured before and after 30 minutes of PES. Three different stimulation paradigms were applied in a random order, at least 48 hours apart. Participants: Twelve healthy participants (seven women, five men, mean age = 40 ± 12 years). Interventions: Three different stimulation conditions were tested using low frequency, wide pulse width, below motor threshold stimulation. 1. Thirty minutes of PES with directed attention 2. Thirty minutes of PES with diverted attention 3. Thirty minutes of sham PES Main measures: Corticomotor excitability using single pulse transcranial magnetic stimulation (TMS), excitability of the primary somatosensory cortex using median nerve SSEPs, and sensory thresholds using Semmes-Weinstein monofilaments. Results: There were no significant changes in motor evoked potentials, somatosensory evoked potentials and sensory threshold following PES with directed or diverted attention. Conclusion: In healthy adults, 30 minutes of PES with directed or diverted attention did not result in an increase in corticomotor excitability, excitability of the primary somatosensory cortex or a decrease in sensory threshold. PES parameters such as duration, frequency, pulse width and intensity and / or the combination of these parameters are likely to have contributed to the findings of the current study. Further research is required to determine optimal PES parameters before it can be implemented clinically.en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/4592
dc.language.isoenen_NZ
dc.publisherAuckland University of Technology
dc.rights.accessrightsOpenAccess
dc.subjectPeripheral nerve stimulationen_NZ
dc.subjectElectrical stimulationen_NZ
dc.subjectSensory cortexen_NZ
dc.subjectMotor cortexen_NZ
dc.subjectSensory thresholden_NZ
dc.subjectSSEPen_NZ
dc.subjectMEPen_NZ
dc.titleThe effect of 30 minutes of peripheral electrical stimulation on excitability of the sensorimotor cortices and sensory threshold of healthy adultsen_NZ
dc.typeThesis
thesis.degree.discipline
thesis.degree.grantorAuckland University of Technology
thesis.degree.levelMasters Theses
thesis.degree.nameMaster of Philosophyen_NZ
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