Talk:Mindflex

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we need more information on this page!!

I'd like to mention that it uses an eeg with three points (guessed number) connected to your head to measure electrical output http://www.mindflexgames.com/how_does_it_work.php Earboxer (talk) 01:35, 25 April 2010 (UTC)[reply]

Brain waves or skin resistance?

I seriously doubt this game uses actual brain waves. Much easier (and more reliable and completely sufficient for the one-dimensional control of the blower) would be the measurement of skin resistance (like electrodermal biofeedback devices do). This is further backed by the fact that the only two contact points are the two earlobe clips. I have no further proof to backup this thesis, though, since I didn't have the heart to dismantle my niece's christmas present... Anyone able to test this with some resistors?93.207.110.87 (talk) 23:16, 25 December 2011 (UTC)[reply]

I imagine you are 100% correct, however you know we can't add self-research to the page. That said, I'm trying to think of a good study for my own amusement. Maybe seeing how the game reacts when someone is reading a short story or getting questioned, and then showing a recording of the game side by side with someone who was actually playing and seeing if you can tell the difference by analyzing the time it takes for the fans to work. Or Something like that. 141.217.50.83 (talk) 15:18, 20 March 2013 (UTC)[reply]

Not skin resistance but actual brainwaves

The proprietary chip used in this toy and as the base of the Neurosky headsets is powered with 3 Volt, and it only has 1 EEG (dry) electrode on the forehead. It needs 2 reference electrodes which can be earlobe clips to determine the right skin/tissue voltages. This doesn't mean the toy is controlled via skin resistance parameters. The electrode picks up one signal and the (proprietary) chip calculates the various brainwaves, alpha-delta-beta-theta high and low, and outputs it via a serial RS232c 8n1 interface (9600 or 57600 baud) as 3 byte unsigned integers per brainwave every second. Typically a dump of 24 bytes with every 3 bytes being one brainwave level (for example beta) and some leading bytes indicating power levels of the device.

How does the Mindflex toy work? It uses another function of the same chip. The chip can be set in a different mode by sending a hexadecimal command to the RS232c interface to make the chip output Attention and Meditation values. These are also calculated by the chip (the newer Neurosky chips can also find eyeblinks in the brainwave data). The Attention and Meditation values are mathematically extracted. This is all the chip does. The output of Attention (or Meditation) is a simple single byte value between 0 (zero) and 100 (hundred) with 65 being a neutral value. This makes it easy to make toys such as the Mattel Mindflex which are controlled via brainwaves. Either with "on/off" action (Focus/stress) or utilizing the 0-100 range (for example a ledbar indicating your meditation level). — Preceding unsigned comment added by 89.200.41.138 (talk) 22:45, 5 January 2021 (UTC)[reply]

Spiegel/Haynes?

What are "the Spiegel/Haynes experiments" referenced here? — Preceding unsigned comment added by 82.20.44.217 (talk) 10:11, 11 April 2012 (UTC)[reply]