Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section
Main articleSomatotopy of human hand somatosensory cortex revealed by dipole source analysis of early somatosensory evoked potentials and 3D-NMR tomography
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Cited by (100)
Reconstructing subcortical and cortical somatosensory activity via the RAMUS inverse source analysis technique using median nerve SEP data
2021, NeuroImageCitation Excerpt :In (Buchner et al., 1995a), its visibility in the stimulation of the right median nerve has been shown for C3, F3 and P3 electrode of a standard 10–20 electrode cap with average reference. The P14 positive far-field peak is generated at 14 ms latency in the brainstem region, particularly, in the medial lemniscus (Buchner et al., 1995a; Mauguière et al., 1983; Noël et al., 1996). The turning point between P14 and N14 is located at the medulla-pontine junction.
Posterior insular activity contributes to the late laser-evoked potential component in EEG recordings
2021, Clinical NeurophysiologyCitation Excerpt :In contrast to hemodynamic imaging studies, electrical and magnetic scalp recordings are far less sensitive to detect activity in deep structures such as thalamus (Th), hippocampus or prefrontal cortex (PFC), although recent attempts were promising in part (Papadelis et al. 2012; Attal and Schwartz 2013). Since localization accuracy worsens with increasing distance from the scalp (Buchner et al. 1995) especially if the signal-to-noise ratio is low (Whittingstall et al. 2003), the absence of Th and PFC activity in EEG recordings might be due to their deep location inside the brain. Thus, neither method could clearly depict activity from these areas.
Hebbian associative plasticity in the visuo-tactile domain: A cross-modal paired associative stimulation protocol
2019, NeuroImageCitation Excerpt :Such a difference in latency is likely due to the distinct neural pathways involved in the cm-PAS compared to classical S1-PAS (Lacey and Sathian, 2016). Although most of the studies on SEPs in humans focused on earlier components evoked by MN electrical stimulation (i.e., P14–N20–P25–N30, also detected in our experiment, but not affected by cm-PAS, see Fig. 4C; e.g., Buchner et al., 1995; Macerollo et al., 2018; Mauguière et al., 1999), there is evidence suggesting that P40 originates at the cortical level, specifically in S1 (Allison et al., 1991, 1989; Gorgoni et al., 2014; Matsunaga et al., 2004) and that it could be associated with a first cognitive processing of the tactile stimulus (Desmedt et al., 1983). Interestingly, the cortical origin of P40 seems to be localized in Broadman’s areas (BA) 1 and 2, while earlier components, such as N20 and P25, in BA 3b (Allison et al., 1991, 1989; Gorgoni et al., 2014).