Table 1

Relationship between LFP samples, video frames, and timestamps

Timestamp	Time (ms)	LFP samples	Video frame
LFP sampling rate set at 2 kHz
1	1–128	1–256	1
2	129–256	257–512	5
3	257–384	513–768	8
4	385–512	769–1024	12
5	513–640	1025–1280	16
…
15	1793–1920	3585–3840	55
16	1921–2048	3841–4096	59

Timestamp	Time (ms)	LFP samples	Video frame	Frame interpolation
LFP sampling rate set at 30 kHz
1	0–9	1–256	1	1
2	9–17	257–512	1	1
3	17–26	513–768	1	1
4	26–34	769–1024	1	1
5	34–43	1025–1280	1	2
…
15	120–128	3585–3840	1	3
16	128–137	3841–4096	4	4

Linear frame interpolation was done offline after data were acquired to assign unassigned frames.