LSL Outlet Number of Channels

[Lavenderjiang]

Why does EEG outlet have 9 channels for a 5-channel brainware? Also, why does motion sensor outlet have 13 channels? Is there a place to look at what each channel represents? (for example, does the first channel corresponds to sensor AF3 or T7?

[tungntEmotiv]

Hi @Lavenderjiang ,

Sorry for late response. Yes the data include more "Timestamp", "Counter", "Interpolate" and "HardwareMarker" channel beside 5 channels of brainware. The order of channels as below: `

Timestamp seconds EEG Counter EEG Interpolate EEG AF3 microvolts EEG T7 microvolts EEG Pz microvolts EEG T8 microvolts EEG AF4 microvolts EEG HardwareMarker EEG

` And more detail about these channels. Please see https://emotiv.gitbook.io/cortex-api/data-subscription/data-sample-object.

And below is outlet data for motion. There are 12 channels `

Emotiv

    <channels>
        <channel>
            <label>Timestamp</label>
            <unit>seconds</unit>
            <type>Motion</type>
        </channel>
        <channel>
            <label>Counter</label>
            <unit />
            <type>Motion</type>
        </channel>
        <channel>
            <label>Interpolate</label>
            <unit />
            <type>Motion</type>
        </channel>
        <channel>
            <label>GYROX</label>
            <unit>dps</unit>
            <type>Motion</type>
        </channel>
        <channel>
            <label>GYROY</label>
            <unit>dps</unit>
            <type>Motion</type>
        </channel>
        <channel>
            <label>GYROZ</label>
            <unit>dps</unit>
            <type>Motion</type>
        </channel>
        <channel>
            <label>ACCX</label>
            <unit>g</unit>
            <type>Motion</type>
        </channel>
        <channel>
            <label>ACCY</label>
            <unit>g</unit>
            <type>Motion</type>
        </channel>
        <channel>
            <label>ACCZ</label>
            <unit>g</unit>
            <type>Motion</type>
        </channel>
        <channel>
            <label>MAGX</label>
            <unit>microTesla</unit>
            <type>Motion</type>
        </channel>
        <channel>
            <label>MAGY</label>
            <unit>microTesla</unit>
            <type>Motion</type>
        </channel>
        <channel>
            <label>MAGZ</label>
            <unit>microTesla</unit>
            <type>Motion</type>
        </channel>
    </channels>
</desc>

` I will update to the document soon. Thank you for raising issue

[Lavenderjiang]

Thank you!