脑电图描记器

Equipment information:

  • The laboratory houses a 64-channel BioSemi ActiveTwo system from Cortech Solutions. This system includes a compact ActiveTwo AD-box, into which sensor-signals attach. In addition to the 64 scalp-signals, the AD-box is also outfitted to receive channels from the face as well as from basic psychophysiological monitors.
  • Each AD-box channel consists of a low noise DC coupled post-amplifier, with a first order anti-aliasing filter, followed by a Delta-Sigma modulator with an oversampling rate of 64, 和 decimation filter with a steep fifth order sinc response 和 high resolution 24-bit output. The digital outputs of all the AD converters (up to 256) are digitally multiplexed 和 sent to the PC via a single optical fiber without any compression or other form of data reduction.
  • T在这里 is a USB2 Receiver which converts the optical data coming from the AD-box to an USB2 output. This receiver also has a trigger port with 16 independent trigger inputs 和 outputs. This setup keeps the stimulation setup galvanically isolated from the subject. The trigger inputs allow easy setup of ERP measurements 和 event logging.
  • The BioSemi headcaps (we have three different sizes of headcap to accommodate all adults) include the the electrode holders. This allows for fast placement of the active electrodes (approximately 15 minutes for a 64 channel headcap).
  • The BioSemi "Pin-type" Active electrode has been designed for mounting in BioSemi headcap's. The electrode has a sintered Ag-AgCl electrode tip, providing very low noise, low offset voltages 和 very stable DC performance. The electrode is completely resistant to long term water 和 alcohol submergence enabling easy cleaning 和 disinfecting. The electrodes are numbered with water-proof stickers for easy channel recognition. Because of the Active electrode principle, high electrode impedances do not influence the signal quality.
  • One benefit of this system is that it does not require scalp abrasion (和 is t在这里fore useful for older adults 和 children with fragile scalps)
  • We currently only have adult head-caps (if interested in collecting data from special populations (e.g., children) additional caps should be purchased by the PI of the lab, each additional cap costs ~$1500)

 

General 脑电图描记器 analysis how to:

  • Here is a great online course to learn how to collect 和 analyze 脑电图描记器/ERP data
    • The above linked website offers a great set of videos 和 quizzes (it the virtual version of the ERP bootcamp offered by NIMH/UC Davis)
  • For a great set of information on all things 脑电图描记器/ERP see this webpage from the ERP bootcamp offered by NIMH/UC Davis: http://erpinfo.org/resources
  • Want to know how to collect clean 脑电图描记器 data? 看到 在这里 for a detailed protocol
  • In the Human Neuroscience laboratory, we recommend using the 脑电图描记器LAB 和 ERPLAB toolbox for all analyses
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