Fig. 4 | Nature Communications

Fig. 4

From: Deep 2-photon imaging and artifact-free optogenetics through transparent graphene microelectrode arrays

Fig. 4

Relationship between local field potential (LFP) and Ca2+ transients. a Comparison of LFP amplitudes across the array in trials where Ca2+ transients were observed (left; 10 trials) or not observed (right; 13 trials, only trials with LFP response amplitudes < − 500 µV are included); amplitudes (heatmap) and traces are trial averages; channel 15 (where Ca2+ data was acquired) is highlighted. Data from experiment shown in Fig. 3c–e. b, c Correlation between LFP and Ca2+ peak amplitude per trial; trials with LFP responses < − 400 µV are included. Calcium signal amplitudes are derived from two different animals; representative experimental data for b (37 trials included) is shown in Fig. 3, representative data for c (100 trials included) is shown in Supplementary Fig. 8

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