Bitbrain SDK 2.8.6
Bitbrain SDK
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EEG impedance/quality values

Possible values for the impedance/quality of each channel of EEG. More...

Variables

BBT_SDK_API const unsigned short bbt_device_impedance_unknown
 The impedance/quality is being computed.
BBT_SDK_API const unsigned short bbt_device_impedance_saturated
 The channel is saturated.
BBT_SDK_API const unsigned short bbt_device_impedance_bad
 The impedance/quality of the channel is bad.
BBT_SDK_API const unsigned short bbt_device_impedance_fair
 The impedance/quality of the channel is fair.
BBT_SDK_API const unsigned short bbt_device_impedance_good
 The impedance/quality of the channel is good.

Detailed Description

Possible values for the impedance/quality of each channel of EEG.

This is an estimation based on a relative impedance measurement among channels at a frequency out of the working EEG band to avoid noise into the channel.

5 Different values are possible: from bbt_device_impedance_unknown to bbt_device_impedance_good. For good EEG mesurements, correct the sensors setup until values bbt_device_impedance_good or else bbt_device_impedance_fair are obtained