128-channel electrical geodesics sensor nets  (electrical geodesics)

Journal: Scientific Reports

Article Title: Theta waves in children’s waking electroencephalogram resemble local aspects of sleep during wakefulness

doi: 10.1038/s41598-017-11577-3

Figure Lengend Snippet: Representative examples of amplitude differences in wake EEG of a child and an adult. ( a ) Four seconds of the unfiltered wake EEG of an adult in the evening (male subject, 19.4 years old, from the data set presented in ref. ). ( b ) Four seconds of the unfiltered wake EEG of a child in the evening (male subject, 12.6 years old). Note, the amplitude of the wake EEG is much higher in children compared to adults. ( c ) Example of the theta event detection algorithm: the same 4 seconds EEG as in b are displayed after filtering (Chebyshev Type 2 Filter: pass-band 5 and 9 Hz, stopband: below 4 and above 12 Hz). Grey asterisks mark the theta events detected by the algorithm.

Article Snippet: Hd wake EEG (Electrical Geodesics Sensor Net for long-term monitoring, HydroGel, 128 channels, Electrical Geodesics, Eugene, OR, USA) was recorded for 4 minutes during an attention task in the evening right before going to bed and in the morning ~30 minutes after wake up.

Techniques: