The effects of stimulus rates on the amplitude of median nerve somatosensory evoked potentials: the developmental change

Araki, Atsushi; Takada, Atsuaki; Yasuhara, Akihiro; Kobayashi, Yohnosuke

doi:10.1016/s0387-7604(98)00092-8

Cited by 14 publications

(12 citation statements)

References 10 publications

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“…During the VEEG recording, the trend‐SEP‐C calculates the latencies and the amplitude values of SEP components and the analysis allows combination of these values with behavioural states related to the EEG period. This is important because it has been demonstrated that SEPs are severely affected by the state of brain activity . We found that latencies and amplitudes of cortical SEPs (N1 component and complex N1‐P1) have lower values during AS and quiet‐wakefulness phases than in the QS phase.…”

Section: Discussionmentioning

confidence: 67%

“…SEP‐C measurements were performed in agreement with Bongers‐Schokking et al, who advocate that SEP recording in newborn infants should involve use of a band‐pass filter of 1–100Hz with a low number of stimuli (25–50), paying close attention to the behavioural state of the infant. They demonstrated that a wide band‐pass filter (>100Hz) induces unacceptable distortion of the scalp potentials and signal artefacts, while the application of less than 50 stimuli is sufficient to obtain a cortical response but prevents system exhaustion . In our case the left and right median nerves were stimulated asynchronously and alternately 50 times to obtain reproducible SEP waves.…”

Section: Discussionmentioning

confidence: 77%

See 1 more Smart Citation

Multimodal neurophysiological monitoring in healthy infants born at term: normative continuous somatosensory evoked potentials data

Lori

Gabbanini

Bastianelli

et al. 2017

Develop Med Child Neuro

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Section: Discussionmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 77%

Multimodal neurophysiological monitoring in healthy infants born at term: normative continuous somatosensory evoked potentials data

Lori

Gabbanini

Bastianelli

et al. 2017

Develop Med Child Neuro

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“…There are several methodological points that enabled us to detect SERs from single trials with such a high success rate. Prior work has suggested that the occurrence and magnitude of SERs in the immature cortex are affected by the preceding and/or simultaneous cortical activity (Khazipov et al, ; Milh et al, ), and a long refractory period of the infant responses is thought to underlie possible failure or modification in sensory responses when using too short interstimulus intervals (Araki, Takada, Yasuhara, & Kobayashi, ; Gibson, Brezinova, & Levene, ; Vanhatalo & Lauronen, ; Verley, ). In order to ensure a higher SER occurrence, we used adaptive interstimulus intervals up to several seconds and intended to give the stimuli at periods with minimal EEG background activity.…”

Section: Discussionmentioning

confidence: 99%

Cortical responses to tactile stimuli in preterm infants

Leikos

Tokariev

Koolen

et al. 2019

Eur J of Neuroscience

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The conventional assessment of preterm somatosensory functions using averaged cortical responses to electrical stimulation ignores the characteristic components of preterm somatosensory evoked responses (SERs). Our study aimed to systematically evaluate the occurrence and development of SERs after tactile stimulus in preterm infants. We analysed SERs performed during 45 electroencephalograms (EEGs) from 29 infants at the mean post‐menstrual age of 30.7 weeks. Altogether 2,087 SERs were identified visually at single‐trial level from unfiltered signals capturing also their slowest components. We observed salient SERs with a high‐amplitude slow component at a high success rate after hand (95%) and foot (83%) stimuli. There was a clear developmental change in both the slow wave and the higher‐frequency components of the SERs. Infants with intraventricular haemorrhage (IVH; eleven infants) had initially normal SERs, but those with bilateral IVH later showed a developmental decrease in the ipsilateral SER occurrence after 30 weeks of post‐menstrual age. Our study shows that tactile stimulus applied at bedside elicits salient SERs with a large slow component and an overriding fast oscillation, which are specific to the preterm period. Prior experimental research indicates that such SERs allow studying both subplate and cortical functions. Our present findings further suggest that they might offer a window to the emergence of neurodevelopmental sequelae after major structural brain lesions and, hence, an additional tool for both research and clinical neurophysiological evaluation of infants before term age.

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“…Several works have investigated the effect of applying different stimulation rates in the SEP morphology (Kritchevsky and Wiederholt, 1978;Pratt et al, 1980;Delberghe et al, 1990;Huttunen and Hömberg, 1991;Larrea et al, 1992;Huttunen et al, 1993;Fujii et al, 1994;Manzano et al, 1995;Nagamine et al, 1998;Araki et al, 1999;Gobbelé et al, 1999;Urasaki et al, 2002;Onishi et al, 1991). However, the majority of these studies has analyzed the mean nerve SEP and has been based on the morphological analysis instead of statistical tests for objective response detection.…”

Section: Discussionmentioning

confidence: 99%

Using Objective Response Detection techniques for detecting the tibial somatosensory evoked response with different stimulation rates

Melges

Infantosi

Sá

2011

Journal of Neuroscience Methods

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This work investigates the influence of the stimulus frequency in the performance of two Objective Response Detection (ORD) techniques, the Magnitude-Squared Coherence (MSC) and the Component Synchrony Measure (CSM), as applied in somatosensory stimulation. Electroencephalographic signals were collected (10-20 International System) from forty adult volunteers without history of neurological pathologies. The stimuli were applied to the right posterior tibial nerve at the frequencies of 2, 5, 7 and 9 Hz and motor threshold intensity level. The detection was based on the rejection of the null hypothesis of response absence (significance level α=0.05 and M=100 and 500 epochs). The performances of the MSC at the four stimulation frequencies were compared, two-by-two, using the Proportion Test applied to the mean percentage rates in the total (2-100 Hz) and optimal (20-60 Hz) bands. The same was proceeded to the CSM. The evaluated derivations were Cz, C4, Pz and P4. No significant difference was found for any studied technique (MSC or CSM), any M-value, at any derivation. Thus, the highest stimulation frequency (9 Hz) can be used in order to obtain a reduction in the time of response detection in an ORD approach for a fixed M-value.

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The effects of stimulus rates on the amplitude of median nerve somatosensory evoked potentials: the developmental change

Cited by 14 publications

References 10 publications

Multimodal neurophysiological monitoring in healthy infants born at term: normative continuous somatosensory evoked potentials data

Multimodal neurophysiological monitoring in healthy infants born at term: normative continuous somatosensory evoked potentials data

Cortical responses to tactile stimuli in preterm infants

Using Objective Response Detection techniques for detecting the tibial somatosensory evoked response with different stimulation rates

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