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. 2021 Jan 18;14:592417. doi: 10.3389/fnins.2020.592417

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Copyright © 2021 Sattler and Wehr.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Four-camera headset design. (A) 3D-printed components used for implants and headsets. (i) Implant base that is implanted on the head. A Neuralynx EIB is attached to the implant base. (ii) Protective cap that snaps onto the implant to allow for social housing when the camera assembly is not in use. (iii) Camera carrier that holds the cameras and their associated LEDs. The ear-facing cameras are each paired with a single LED for illumination, whereas the overhead camera has two LEDs (for illuminating the left and right side of the mouse's face), and the forward-facing camera does not have an LED. The forward facing camera holder is attached to the main camera carrier component after printing. Numbered labels indicate (1) tetrode drive screw, (2) tetrode guide rails, (3) optional independent camera mount, (4) tetrode guide cannulae, (5) forward camera holder (6) receiving slot for forward camera holder. For further details on labels 1–4 see section Methods: Implants, for labels 5–6 see section Methods: Four-Camera Headset, Construction. (B) Rendered view of the components in (A), separately at left and assembled at right. Numbered labels indicate (7) SPI cable connector, (8) integrated accelerometer, (9) Intan 32-channel headstage, (10) camera carrier, (11) resistor, (12) camera module, (13) IR LED, (14) protective social cap, (15) Neuralynx EIB, and (16) implant base. (C) A view of the headset assembled around the headstage from the front (left) and underneath (right).