Figure 7: Excitatory and Inhibitory Synaptic Inputs Shift Equally. | Scientific Reports

Figure 7: Excitatory and Inhibitory Synaptic Inputs Shift Equally.

From: Bidirectional Shifting Effects of the Sound Intensity on the Best Frequency in the Rat Auditory Cortex

Figure 7

(A) Example of sound-induced excitatory and inhibitory synaptic inputs. The bars represent the sound stimulation. Scale bar, 50 ms and 120 pA; EPSC, excitatory postsynaptic current; IPSC, inhibitory postsynaptic current. (B) Synaptic responses evoked by 60 dB white noise at different holding potentials. (C) I-V curves for the synaptic currents. These curves were based on the synaptic amplitude within 0–1 ms (red) and 20–21 ms (black) windows after the synaptic onset. Error bar, SEM. (D) Example synaptic tonal receptive field of the EPSCs and IPSCs. (E) Color map of the synaptic tonal receptive field. The color represents the amplitude of the evoked currents. (F & G) Enlarged synaptic input tuning curve of the EPSCs and IPSCs at threshold and 70 dB. The arrows indicate the BF and CF. (H & I) Enveloped tuning curves for the EPSCs (blue) and IPSCs (red) at threshold and 70 dB.

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