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<p>There are several software programs that will allow you to collect 19+ channel EEG data. A few of them include: EEGStudio, Neuroguide, NeuroField, and xxxxx. This section will cover two platforms for recording EEG: NeuroField and Neuroguide.</p>
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<h5><b>The 10–20 System and Electrode Placement</b></h5>
<ol>
    <li>The 10-20 System and Electrode Placement To begin, we first cap up. At present (2019), caps with electrodes placed using the international 10-20 system are popular in clinical neurotherapy. The 10-20 system is an internationally recognized way of
        placing electrodes on a head that is replicable and verified scientifically. The electrodes pick up the EEG from the cerebral cortex underneath the electrode location.</li>
    <li>The “10” and “20” refer to the distances between electrodes, which are either 10% or 20% of the total diameter or radius (transverse and sagittal) of the skull (Figure 1a). The landmarks that are used sagittal are the nasion (the depressed area between
        the eyes on the ride of the nose) and the inion (the bump at the back of the skull, which can be felt with mild palpitation); landmarks that are used transversely (aka coronally) are the ears (often the tragus of the ear) (Figure 1b).</li>
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			<div><img src="@@PLUGINFILE@@/electrode-placement.png" alt="Figure 1b: The locations of the nasion, inion, and tragus points for measurement purposes." role="presentation" class="img-responsive atto_image_button_text-bottom  m-max-height"></div>
    <p><i>Figure 1a. The International 10-20 system of electrode placements.</i></p>
	
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			<div><img src="@@PLUGINFILE@@/tragus-points.png" alt="Figure 1b: The locations of the nasion, inion, and tragus points for measurement purposes." role="presentation" class="img-responsive atto_image_button_text-bottom  m-max-height"></div>
    <p><i>Figure 1b: The locations of the nasion, inion, and tragus points for measurement purposes.</i></p>
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    <h5><b>Electrode Labels</b></h5>
    <p>Each electrode is labeled by a letter or pair of letters.</p>
    <ul>
        <li>Fp = Pre-frontal</li>
        <li>F = Frontal</li>
        <li>T = Temporal</li>
        <li>O = Occipital</li>
        <li>P = Parietal</li>
        <li>C = Central</li>
        <li>z = Zenith or Zero (reflecting the midline sagittal plane of the scalp, such as Fpz, Fz, Cz, Oz).</li>
    </ul>
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    <p>In a 19-channel placement, there are 19 electrodes, the ground, and the reference electrodes (Figure 1c). In a 32, 64, or 128 channel system, there are more electrode names. The additional electrodes are initially placed between the 20% marks and
        are of the “Modified Combinatorial Nomenclature” (MCN) system (Figure 1d). The MCN system adds the following acronyms to designate areas (FC, FT, AF, TP, CP). The MCN system also renames four electrodes in the 10-20 system:</p>
    <ul>
        <li>T3 becomes T7</li>
        <li>T4 becomes T8</li>
        <li>T5 becomes P7</li>
        <li>T6 becomes P8</li>
    </ul>
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    <p>Even numbered electrodes (2, 4, 6, 8) are on the right hemisphere of the head and odd numbered electrodes (1, 3, 5, 7) are on the left hemisphere of the head.</p>
    <p>A1 and A2 refer to the ear references and M1 and M2 refer to mastoid references.</p>
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    <div><img src="@@PLUGINFILE@@/inion.png" alt="" role="presentation" class="img-responsive atto_image_button_text-bottom m-max-height"></div>
    <p><i>Figure 1c: 19 active electrodes and reference electrodes (A1 and A2).</i></p>
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    <div><img src="@@PLUGINFILE@@/mnc-system.png" alt="" role="presentation" class="img-responsive atto_image_button_text-bottom m-max-height"></div>
    <p><i>Figure 1d: The electrodes active in the MCN system.</i></p>
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</ol>