Journal: Brain Topography

Article Title: Migraine Type-Dependent Patterns of Brain Activation After Facial and Intranasal Trigeminal Stimulation

doi: 10.1007/s10548-022-00924-x

Figure Lengend Snippet: Identification of scalp predominant topography in the mechanosensory condition for the three groups in the study. (i) Grand mean for control (N), patients with migraine without aura (PM), and patients with migraine with aura (PMA) reported in red (positive)/blue(negative) voltage diagram, and relative topography averaged over 60 ms. Each diagram shows the voltage over the 128 channels (electrodes) used to register the scalp electroencephalogram. The electrodes were subdivided into four regions, indicated with A, B, C and D, each conveying 32 channels. (ii) Scalp distribution of the Biosemi 128-channel on the cap. A: central-occipital area, B: right centro-occipital area, C: Fronto-central area, D: left centro-occipital area. (iii) Microstates segmentation of the Grand Mean for the three groups in the study, N, PM, and PMA. The segments are projected on the global field power (GFP) of the relative GM, and they are reported color-coded and numbered in order of appearance. (iv) Microstates map topographies as defined by the segmentation process. A total of 18 maps describe the mechanosensory process across 1.2 s of post-stimulus onset for the three groups. The common maps across the groups are highlighted with dashed squares color-coded with the relative segment. The defined microstates are coherently found in the original topography as shown in (i) . Similar topographies are highlighted with dashed squares also color-coded with the relative microstates

Article Snippet: Electrodes were mounted on a standard 10/10 System head cap (BioSemi cap) and connected to the EEG amplifier (BioSemi Active Two AD-box).

Techniques:

Journal: Brain Topography

Article Title: Migraine Type-Dependent Patterns of Brain Activation After Facial and Intranasal Trigeminal Stimulation

doi: 10.1007/s10548-022-00924-x

Figure Lengend Snippet: Identification of scalp predominant topography in the chemosensory condition for the three groups in the study. (i) Grand mean for control (N), patients with migraine without aura (PM), and patients with migraine with aura (PMA) reported in red (positive)/blue(negative) voltage diagram, and relative topography averaged over 60 ms. Each diagram shows the voltage over the 128 channels (electrodes) used to register the scalp electroencephalogram. The electrodes were subdivided into four regions, each conveying 32 channels. (ii) Scalp distribution of the Biosemi 128-channel on the cap. A: central-occipital area, B: right centro-occipital area, C: Fronto-central area, D: left centro-occipital area. (iii) Microstates segmentation of the Grand Mean for the three groups in the study, N, PM, and PMA. The segments are projected on the global field power (GFP) of the relative GM, and they are reported color-coded and numbered in order of appearance. (iv) Microstates map topographies as defined by the segmentation process. A total of 18 maps describes the chemosensory process across 1.2 s of post-stimulus onset for the three groups. The microstates, originally named with numbers in crescent order, were renamed with alphabetic letters from a to t, to avoid confusion with the maps identified in the mechanosensory segmentation. The common maps across the groups are highlighted with dashed squares color-coded with the relative segment. The defined microstates are coherently found in the original topography as shown in (i) . Similar topographies are highlighted with dashed squares also color-coded with the relative microstates

Article Snippet: Electrodes were mounted on a standard 10/10 System head cap (BioSemi cap) and connected to the EEG amplifier (BioSemi Active Two AD-box).

Techniques: