Short and long latency cortical potentials following trigeminal nerve stimulation in man

Drechsler, F.

doi:10.1007/978-94-011-6645-4_47

Cited by 22 publications

(2 citation statements)

References 6 publications

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“…Somatosensory evoked potentials (SEPs) by peripheral nerve stimulation are captured in electroencephalogram (EEG) and allow the quantitative assessment of the integrity of the somatosensory pathway. They are divided into three components, including i) the peripheral potential (N9) reflecting the afferent volley at the level of the plexus brachialis, ii) the early cortical SEPs (N20, P25, N30 and P35) whose activity sources are located in the primary somatosensory area (S1) and the motor cortex, and iii) the late cortical SEPs (P45, N60, P100 and N120) involving the secondary somatosensory area (S2) and associative areas (Giblin, 1964;Woolsey et al, 1979;Drechsler, 1980;Shahani et al, 1980, Small, 1980Anziska and Cracco, 1983;Allison et al, 1992;Mauguiere et al, 1997Mauguiere et al, , 1999Urbano et al, 1997;Torquati et al, 2002;Mauguiere, 2005;Papadelis et al, 2011;Aspell et al, 2012;Saradjian et al, 2013). Early SEPs mainly depend on peripheral inputs and are primarily involved in stimulus perception (intensity, location) (Halgren et al, 1998;Torquati et al, 2002;Lim et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Abnormal cortical brain integration of somatosensory afferents in ALS

Sangari

Giron

Marrelec

et al. 2018

Clinical Neurophysiology

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Section: Introductionmentioning

confidence: 99%

Abnormal cortical brain integration of somatosensory afferents in ALS

Sangari

Giron

Marrelec

et al. 2018

Clinical Neurophysiology

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“…Trigeminal somatosensory evoked potentials (TSEPs) were originally used as an objective correlate for acute experimental pain (Chatrian et al, 1975), but have recently found wider appeal (Stohr and Petruch, 1979;Bennett and Jannetta, 1980;Drechsler, 1980;Stohr and Petruch, 1981;Eisen et al, 1981(a)). The general wave form of the TSEP is similar to that obtained with arm stimulation.…”

Section: Other Sepsmentioning

confidence: 99%

The Somatosensory Evoked Potential

Eisen

1982

Can. j. neurol. sci.

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Three decades have elapsed since Dawson (1947) recorded the first somatosensory evoked potential (SEP). Simple superimposition of individual responses was possible because the patient had progressive myoclonic epilepsy. In this disease the SEP amplitude is much enhanced (Shibasaki et al, 1978; Kelly et al, 1981). Subsequently Dawson (1951, 1954) presented his averager to the Physiological Society, thereby initiating the present-day explosive growth of evoked potentials.SEPs are made up of components with varying latencies. The components are best identified by latency and polarity as recorded at the scalp (P = positive and N = negative). Nevertheless, the nomenclature of somatosensory evoked potentials can be extremely confusing, mainly because the same component can have a different polarity depending on the electrode montage used. Generally speaking (but this is not a firm rule), far-field (subcortical) potentials are positive in polarity when a non-cephalic reference is used, whereas these same components have a negative polarity when the reference is on the scalp. It is therefore useful to always indicate the recording montage being employed. In addition, use of absolute latencies in the terminology can cause confusion because they are dependent upon length and body height. For example, the brachial plexus component usually occurs at about 9 msec, but may extend to as long as 11 or more msec in a very tall individual. Subsequent components then become difficult to identify in relation to normal means.

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Trigeminal evoked potentials following brief air puff: Enhanced signal‐to‐noise ratio

Hashimoto

1988

Annals of Neurology

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Trigeminal somatosensory evoked potentials (TSEPs) were studied by using fast-rising air puffs generated by a high-speed air control system. Within 100 ms, air puff stimulation of the face elicited three negative and three positive components over the contralateral, as well as the ipsilateral, sensory area. The air puff TSEPs showed a uniform change in peak latencies and amplitudes as a function of stimulus intensity. The bilateral distribution of the TSEPs stands in sharp contrast to the exclusively contralateral distribution of the SEPs to stimulation of the hand. Air puffs evoked a larger response than electrical stimulation, although the latency remained the same. Unlike electrical stimuli, air puff induces neither stimulus nor muscle artifacts. This, combined with the higher amplitude of the recorded response, enhances the signal-to-noise ratio.

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Short and long latency cortical potentials following trigeminal nerve stimulation in man

Cited by 22 publications

References 6 publications

Abnormal cortical brain integration of somatosensory afferents in ALS

Abnormal cortical brain integration of somatosensory afferents in ALS

The Somatosensory Evoked Potential

Trigeminal evoked potentials following brief air puff: Enhanced signal‐to‐noise ratio

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