Fig. 8: Hyperpolarizing currents in the soma might affect the LFP shape.
From: Stimulus duration encoding occurs early in the moth olfactory pathway
A Input current to a multicompartmental ORN model. B, C Membrane potential in the soma without and with an adaptation current Iad. In B, no adaptation current was involved (Iad = 0). In C, the adaptation current was calculated so that the somatic membrane potential resembled the firing rate of the ORN. The adaptation current then changed the time course of the LFP (D). E, F To test whether the LFP shape is affected by firing activity-activated hyperpolarizing currents, we abolished the firing activity by injecting TTX into the neurons. The TTX-treated ORNs (N = 17) exhibited a similar LFP response shape as the control ORNs (N = 12), including a peak in deflection towards the end of the stimulus, indicating that this slow deflection was not caused by the firing activity.
