Optrode Holder Technical Sketch

<p>Technical sketch of an optrode holder, now featured in our published protocol 'Simultaneous recordings of pupil size variation and locus coeruleus activity in mice' (available at <a href="https://star-protocols.cell.com/protocols/3209#article-info" target="_new">https://star-protocols.cell.com/protocols/3209#article-info</a>). This resource enable researchers to replicate and utilize our custom-built optrode holder for various applications, including the one described in our protocol.&nbsp;</p>