Movement-related changes in cortical excitability: A steady-state SEP approach

Kourtis, Dimitrios; Seiss, Ellen; Praamstra, Peter

doi:10.1016/j.brainres.2008.09.048

Cited by 8 publications

(2 citation statements)

References 40 publications

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“…This response is thought to result from synchronized periodic activity generated in neuronal populations responding to the periodically-modulated feature [23]. In the somatosensory modality, several studies have used SS-EPs to characterize the cortical activity related to the perception of pure mechanical vibrations [24][25][26] or electrical stimulation [27,28]. The majority of these studies have focused on frequencies around 20 Hz.…”

Section: Introductionmentioning

confidence: 99%

A novel method using EEG to characterize the cortical processes involved in active and passive touch

Moungou

Vezzoli

Lombart

et al. 2016

2016 IEEE Haptics Symposium (HAPTICS)

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International audienceWe present a novel method to compare brain responses to identical tactile stimuli in active and passive touch. Using electroencephalography (EEG) to record steady-state evoked brain potentials (SS-EPs), our goal was to characterize the cortical activity related to the tactile exploration of a textured surface. For this purpose, we used a novel tactile display, which is able to produce tactile texture experiences using ultrasonic stationary waves to transiently modulate tangential friction between the finger and the display. Because the change in friction depends on the amplitude of the ultrasonic vibrations, modulation of ultrasonic vibration amplitude was used to periodically modulate friction at a frequency of 11 Hz, producing a tactile percept resembling that of a square-wave grating. After recording the exact motion of the fingertip and normal force used for each trial while one participant freely explored the surface (active touch condition), the same motion and normal force was reproduced by a high-precision robotic device with force feedback (passive touch condition). Frequency analysis of the recorded EEG signals showed that, for both active and passive touch conditions, the interactions between the fingertip and the plate elicited a robust SS-EP at 11 Hz, corresponding to the frequency of friction modulation, maximal over the parietal region contralateral to the stimulated finger. Our results suggest that the cortical activity related to active and passive touch can be characterized in humans by combining the recording of SS-EPs with an ultrasonic device generating a periodic tactile experience whose frequency is independent of finger movements

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Section: Introductionmentioning

confidence: 99%

A novel method using EEG to characterize the cortical processes involved in active and passive touch

Moungou

Vezzoli

Lombart

et al. 2016

2016 IEEE Haptics Symposium (HAPTICS)

View full text Add to dashboard Cite

show abstract

“…In this context, sensorimotor synchronization to the beat is supported in the human brain by two distinct neural activities: an activity elicited at beat frequency probably involved in beat processing and a distinct neural activity elicited at a frequency corresponding to the movement and probably involved in the production of synchronized movements [52][53][54][59][60][61] (figure 4). Most importantly, there is evidence for an interaction between sensory-and movement-related activities when participants tap to the beat, in the form of (i) an additional peak appearing at 3.6 Hz, compatible with a nonlinear product of sensorimotor integration (i.e.…”

Section: Neural Entrainment Underlying Sensorimotor Synchronization Tmentioning

confidence: 99%

Exploring how musical rhythm entrains brain activity with electroencephalogram frequency-tagging

Nozaradan

2014

Phil. Trans. R. Soc. B

155

121

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The ability to perceive a regular beat in music and synchronize to this beat is a widespread human skill. Fundamental to musical behaviour, beat and meter refer to the perception of periodicities while listening to musical rhythms and often involve spontaneous entrainment to move on these periodicities. Here, we present a novel experimental approach inspired by the frequency-tagging approach to understand the perception and production of rhythmic inputs. This approach is illustrated here by recording the human electroencephalogram responses at beat and meter frequencies elicited in various contexts: mental imagery of meter, spontaneous induction of a beat from rhythmic patterns, multisensory integration and sensorimotor synchronization. Collectively, our observations support the view that entrainment and resonance phenomena subtend the processing of musical rhythms in the human brain. More generally, they highlight the potential of this approach to help us understand the link between the phenomenology of musical beat and meter and the bias towards periodicities arising under certain circumstances in the nervous system. Entrainment to music provides a highly valuable framework to explore general entrainment mechanisms as embodied in the human brain.

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Stability and distribution of steady-state somatosensory evoked potentials elicited by vibro-tactile stimulation

Breitwieser

Kaiser

Neuper

et al. 2012

Med Biol Eng Comput

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Steady-state somatosensory evoked potentials (SSSEPs) have been elicited applying vibro-tactile stimulation to all fingertips of the right hand. Nine healthy subjects participated in two sessions within this study. All fingers were stimulated 40 times with a 200-Hz carrier frequency modulated with a rectangular signal. The frequencies of the rectangular signal ranged between 17 and 35 Hz in 2 Hz steps. Relative band power tuning curves were calculated, introducing two different methods. Person-specific resonance-like frequencies were selected based on the data from the first session. The selected resonance-like frequencies were compared with the second session using an ANOVA for repeated measures to investigate the stability of SSSEPs over time. To determine, if SSSEPs can be classified with a classifier based on unseen data, an LDA classifier was trained with data from the first and applied to data from the second session. Person-specific resonance-like frequencies within a range from 19 to 29 Hz were found. The relative band power of the resonance-like frequencies did not differ significantly between the two sessions. Significant differences were found for the two methods and the used channels. SSSEPs were classified with a hit rate from 51 to 96 %.

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Movement-related changes in cortical excitability: A steady-state SEP approach

Cited by 8 publications

References 40 publications

A novel method using EEG to characterize the cortical processes involved in active and passive touch

A novel method using EEG to characterize the cortical processes involved in active and passive touch

Exploring how musical rhythm entrains brain activity with electroencephalogram frequency-tagging

Stability and distribution of steady-state somatosensory evoked potentials elicited by vibro-tactile stimulation

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