EEG cartography before and after visual stimulation: a group study with descriptive non-parametric analysis of EEG data

Brain Topography
P EtevenonE Zarifian

Abstract

Ten right-handed students were submitted to a protocol of cognitive visual stimulations based on six successive sequences: EC1, EO, B1, B2, B3, EC2. Following a first "eyes closed" (EC1) multiple EEG recording (16 EEG leads, plus polygraphy), and an "eyes-open" recording (EO) with central visual fixation, 60 computer-controlled slides were presented successively for each of three successive recordings (B1, B2, B3) before the last "eyes-closed" recording (EC2). In B1, the subjects were asked to look at the meaningful black and white drawings presented without comment. In B2, a second set of similar pictures was presented, with the advice to try to remember later on the visually projected slides. In B3, a memory recognition task was introduced with 20 slides coming from the B1 set, 20 from the B2 set, completed by 20 new slides. Each slide was presented for 10.24s. followed by a beep audio-signal indicating that the subjects should press electronic mouse knobs alternatively in B1, B2, and for indicating their answers in B3. After artifact rejection, EEG spectral analysis was followed by parametrization and group studies applying Fisher non-parametric paired exact probability tests. Nine comparisons were computed: EC1-EC2, EC1-EO,...Continue Reading

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Citations

Jan 1, 1991·Sozial- Und Präventivmedizin·G DomenighettiP Lopipero
Aug 30, 2007·The Journal of General and Applied Microbiology·Ismet AraSatoshi Omura
Jan 24, 2009·The Journal of General and Applied Microbiology·Ismet AraYoko Takahashi
Nov 23, 2017·Basic and Clinical Andrology·Faruk Hadziselimovic
Oct 7, 2005·Journal of Clinical and Experimental Neuropsychology·Eli Vakil

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