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. 2020 Aug 14;14:253. doi: 10.3389/fncel.2020.00253

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Copyright © 2020 Hellmer, Bohl, Hall, Koehler and Ichinose.

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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Comparison of three stimulus functions. (A) Sinusoidal light stimuli from 0.3 to 20 Hz (lower) and a representative response (light-evoked postsynaptic potentials; L-EPSP; upper). (B) Chirp light stimuli and L-EPSP with the same frequencies from the same cell. (C) Sum of sinusoidal light stimuli of similar frequencies and L-EPSP. (D) Comparison of L-EPSPs evoked by three functions (n = 3 ganglion layer cells). (E) A representative L-EPSP from bipolar cells (upper) evoked by a sum of sinusoidal light stimulation (lower). (F) An fast fourier transformation (FFT) analysis of the traces (E) revealed the different frequencies of light stimuli (lower) and the amplitude of L-EPSP for each frequency.