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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Integr Biol (Camb). 2010 Oct 15;3(1):48–56. doi: 10.1039/c0ib00067a

Fig. 4. Frequency sweep.

Fig. 4

(A) Per-cell fluorescence intensity of reporter as frequency is swept, for 9 Vpp, 5 Vpp, and 1 Vpp (all at 15 min exposure duration), showing increased stress activation at low frequencies (less than ~ 500 kHz ) compared to higher frequencies (greater than ~1 MHz). Top panel shows fluorescence images of representative scan points at 9 Vpp. (B) Heat map showing average percell fluorescence across 8 voltages (from 1 Vpp through 20 Vpp) and 13 frequencies (from 250 kHz to 50 MHz). Sweeps across frequency (at different voltages) show similar trends with increased stress at lower frequencies.