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<!doctype html>
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<title>Shared EEG Lab · PBS & DBIC Shared Resources</title>
<meta name="description" content="A shared high-density EEG facility with three electromagnetically shielded, sound-attenuated testing rooms and Brain Products active-electrode systems for millisecond-resolution ERP and oscillation research." />
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<span class="kicker">Electroencephalography</span>
<h1>Shared EEG Lab</h1>
<p class="lede">A high-density EEG facility built for millisecond-resolution electrophysiology — three electromagnetically shielded, sound-attenuated testing rooms paired with Brain Products active-electrode systems for event-related potential and neural-oscillation research.</p>
<span class="maintainer">Maintained by the <a href="https://sites.dartmouth.edu/stoermerlab/" target="_blank" rel="noopener">BrainStörmer Lab</a> · Shared</span>
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<span class="eyebrow">The facility</span>
<h2>High-density EEG, purpose-built rooms</h2>
<p class="prose" style="color:var(--text-soft)">The shared EEG lab records the brain's electrical activity directly at the scalp, resolving neural events on the order of milliseconds. Where fMRI excels at spatial detail, EEG captures the precise timing of perception, attention, and cognition — making it the tool of choice for event-related potential (ERP) and oscillation research.</p>
<p class="prose" style="color:var(--text-soft)">The lab combines Brain Products high-density active-electrode systems with three dedicated testing rooms that are both electromagnetically shielded and sound-attenuated, giving experimenters a quiet, low-noise environment for clean recordings across a wide range of paradigms. It is maintained by the <a href="https://sites.dartmouth.edu/stoermerlab/" target="_blank" rel="noopener">BrainStörmer Lab (Perception, Attention, & Memory Laboratory)</a>, led by Prof. Viola Störmer.</p>
<ul class="spec-list" style="margin-top:1.5rem;">
<li><strong>Temporal resolution:</strong> millisecond-scale, ideal for ERP & oscillation work</li>
<li><strong>Amplification:</strong> Brain Products active-electrode systems (e.g. actiCHamp Plus), 24-bit</li>
<li><strong>Environment:</strong> three electromagnetically shielded, sound-attenuated rooms</li>
<li><strong>Access:</strong> shared across the Dartmouth research community</li>
</ul>
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<div class="split-media" data-reveal data-reveal-delay="1">
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<img src="images/eeg-highdensity.jpg" alt="High-density EEG cap with an array of active electrodes" />
<figcaption>Representative image. A high-density active-electrode EEG cap of the class used in the shared lab.</figcaption>
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<span class="eyebrow" data-reveal>Testing space</span>
<h2 data-reveal data-reveal-delay="1">Three shielded testing rooms</h2>
<p class="lede" data-reveal data-reveal-delay="2">Each room is engineered to keep electrical and acoustic interference out, so the signals you record reflect the brain rather than the building.</p>
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<h4>Electromagnetic shielding</h4>
<p>Rooms are shielded against ambient electromagnetic interference, protecting microvolt-scale EEG signals from line noise and nearby equipment.</p>
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<h4>Sound attenuation</h4>
<p>Acoustic treatment isolates participants from external noise — essential for auditory paradigms and for keeping attention on the task.</p>
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<h4>Three parallel rooms</h4>
<p>Three dedicated rooms let multiple studies run in parallel and support flexible scheduling across labs sharing the facility.</p>
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<img src="images/eeg-highdensity.jpg" alt="Active-electrode high-density EEG cap fitted for recording" />
<figcaption>Representative image. Brain Products active-electrode systems scale to high channel counts for dense scalp coverage.</figcaption>
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<span class="eyebrow">The recording system</span>
<h2>High-density active electrodes</h2>
<p class="prose" style="color:var(--text-soft)">The lab's Brain Products systems use active electrodes, which amplify the signal at the scalp to reduce noise and cable artifacts and to tolerate higher electrode impedances. Systems of this class (such as the actiCHamp Plus) scale flexibly from dense arrays down to smaller montages, with 24-bit resolution to capture fine-grained voltage fluctuations.</p>
<div class="spec-table-wrap" style="margin-top:1.2rem;">
<table class="spec-table">
<thead><tr><th scope="col">Specification</th><th scope="col">Detail</th></tr></thead>
<tbody>
<tr><th scope="row">Manufacturer</th><td>Brain Products high-density EEG (e.g. actiCHamp Plus)</td></tr>
<tr><th scope="row">Channels</th><td>Scalable high-density coverage — systems of this class support up to 160 channels</td></tr>
<tr><th scope="row">Electrodes</th><td>Active electrodes (scalp-side amplification, low-noise, impedance-tolerant)</td></tr>
<tr><th scope="row">Resolution</th><td>24-bit analog-to-digital conversion</td></tr>
<tr><th scope="row">Environment</th><td>Electromagnetically shielded, sound-attenuated testing rooms</td></tr>
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<span class="eyebrow" data-reveal>What it supports</span>
<h2 data-reveal data-reveal-delay="1">Research applications</h2>
<p class="lede" data-reveal data-reveal-delay="2">Dense scalp coverage plus millisecond timing opens a broad range of electrophysiological questions.</p>
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<h4>Event-related potentials</h4>
<p>Time-locked averaging isolates ERP components tied to perception, attention, memory, and language with millisecond precision.</p>
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<h4>Neural oscillations</h4>
<p>Time-frequency analysis of rhythmic activity across theta, alpha, beta, and gamma bands during cognitive tasks.</p>
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<h4>Connectivity</h4>
<p>High-density coverage supports scalp-level and source-space connectivity measures across distributed networks.</p>
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<h4>Multimodal integration</h4>
<p>EEG's temporal detail complements spatial methods, enabling multimodal designs alongside other shared imaging resources.</p>
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<h4>Attention & perception</h4>
<p>A quiet, shielded environment supports carefully controlled visual and auditory paradigms probing selective attention.</p>
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<h4>Cognitive electrophysiology</h4>
<p>Flexible montages accommodate diverse cognitive, developmental, and clinical-research protocols.</p>
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<!-- ============ RELATED RESOURCE ============ -->
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<span class="eyebrow" data-reveal>Related resource</span>
<h2 data-reveal data-reveal-delay="1">Rapid-setup systems for dyadic work</h2>
<p class="prose" data-reveal data-reveal-delay="2" style="color:var(--text-soft)">Complementing the high-density lab, the Wager lab / CANlab maintains four rapid-setup wet 20-channel EEG systems (Wavimed). Their quick preparation makes them well suited to dyadic and multi-participant recordings, where two people are fitted and recorded together for studies of social and interactive processes.</p>
<div class="callout" data-reveal><strong>Also available:</strong> four Wavimed rapid-setup wet 20-channel systems (Wager lab / CANlab) for dyadic and multi-participant EEG.</div>
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<span class="eyebrow" data-reveal>Access</span>
<h2 data-reveal data-reveal-delay="1">Using the EEG lab</h2>
<p class="lede" data-reveal data-reveal-delay="2">The EEG lab is a shared resource maintained by the <a href="https://sites.dartmouth.edu/stoermerlab/" target="_blank" rel="noopener" style="color:var(--emerald-lite);">BrainStörmer Lab</a> and open to the Dartmouth research community. Reach out to discuss study design, scheduling across the three testing rooms, and system configuration.</p>
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<strong style="color:var(--emerald-lite);">Get in touch:</strong> Contact the <a href="https://sites.dartmouth.edu/stoermerlab/" target="_blank" rel="noopener" style="color:var(--emerald-lite);">BrainStörmer Lab</a> to arrange access and discuss protocols. General shared-resource inquiries can be directed to <a href="mailto:courtney.rogers@dartmouth.edu">courtney.rogers@dartmouth.edu</a>, Moore Hall, Hanover, NH.
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