Figure 3.

Two-camera headset, and two example applications of freely-moving behavior and electrophysiology. (A) Rendered view of the two-camera headset (left), and an example frame from Supplementary Video 2 showing the signals produced by this headset (right). A collimating lens (revealed on the right side of the render) was used for some experiments, but is not necessary for capturing all eye movements. (B) Example waveforms across the four channels of a tetrode shown for an individual unit (cell ID 1) recorded in anterior lateral motor cortex (ALM) during prey capture behavior. Rasters of cells firing and the accelerometer channels are plotted together (right) for the corresponding frames shown in (A). The accelerometers are built into the Intan headstage. (C) An example frame from Supplementary Video 3. The left eye is closed (due to a blink). A spectrogram (top) shows ultrasonic vocalizations occuring during courtship behavior. Continuous LFP traces from various recording locations are shown below. OLF, olfactory bulb; ALM, anterior lateral motor cortex; ACC, anterior cingulate cortex; Hip, CA1 of the hippocampus; S1BF, barrel field of primary somatosensory cortex; S2, secondary somatosensory cortex; A1, primary auditory cortex; A2, secondary auditory cortex.