Interested Customer with Questions

tristanlbaileytristanlbailey Australia
in General Discussion

Hey there! I'm interested in purchasing an Ultracortex Mark IV EEG Headset and Cyton Biosensing Board (8-channel), and would like to ask some questions:

How accurate is the Ultracortex Mark IV EEG Headset and Cyton board with providing signals? I understand that noise is a concern with EEG.

How many areas of the brain can it access? It could receive signals from the surface of the brain fairly easily, but what about deeper down in the Cerebral cortex? The Limbic system?

Also, I noticed that the shop page for the Ultracortex Mark IV headset features a link for a 500mAh 3.7V battery (Adafruit), and one for a 400mAh 3.7V battery (Sparkfun). Does it matter how much charge a battery contains when using it with that headset? How long does a 500mAh charge last for, typically?

Thanks in advance.

Comments

  • wjcroftwjcroft Mount Shasta, CA
    Tristan, hi.

    This recent paper by Jeremy Frey compares a g.tec amp with OpenBCI.
    Both amps connected to the same active cap. G.tec equipment costs tens of thousands of dollars, so we came out quite well.

    https://hal.inria.fr/hal-01328427/document

    Surface EEG pulls from a wide area of cortex. To pick out specific voxel areas you need to do source localization, which typically requires 19 or more channels. Limbic system not very easy to see because it is not cortex, no pyramidal cells generating dipole currents. But some high end systems such as Brainmaster Discovery / Avatar do provide an ROI for limbic. Not sure how accurate.

    Any battery will work. Not much difference in these two.

    William

  • tristanlbaileytristanlbailey Australia
    Hi William, thanks for that information.

    I was trying to checkout the aforementioned items from your store using a VISA debit card. However, it displayed the following message:

    Card was declined

    I have enough funds in my account to proceed with the transaction, and I have never had troubles using debit cards before now. I made extra sure when I attempted a second and third time that everything was inserted properly into the form, including my name, card number, and CVV number.

    Is it because I'm trying to use a debit card, instead of a credit card?

  • wjcroftwjcroft Mount Shasta, CA
    Send an email to contact at openbci.com. Sounds like a glitch, should be easy to fix.

  • tristanlbaileytristanlbailey Australia
    OK, I think that the problem was to do with a $1000 debit limit on my VISA card. I'll try using PayPal instead.

    Thanks again.
  • tristanlbaileytristanlbailey Australia
    Hello again. Thanks for the 15% discount; that made my decision to purchase OpenBCI gear easier.

    After having purchased items, I noticed on the final checkout screen the following line:

    fbq('track', 'Purchase', {value: '1,005.14', currency:'USD'});

    which I don't think is supposed to be there. It was under the order number and "Thank you Tristan!", and above a map of where I live.
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