Spontaneous high-frequency action potential

High frequency of spontaneous triploids in barley

Mesoscale infraslow spontaneous membrane potential fluctuations recapitulate high-frequency activity cortical motifs.

Neuroimaging of spontaneous, resting-state infraslow (<0.1 Hz) brain activity has been used to reveal the regional functional organization of the brain and may lead to the identification of novel biomarkers of neurological disease. However, these imaging studies generally rely on indirect measures of neuronal activity and the nature of the neuronal activity correlate remains unclear. Here we sh...

Layer-specific high-frequency action potential spiking in the prefrontal cortex of awake rats

Cortical pyramidal neurons show irregular in vivo action potential (AP) spiking with high-frequency bursts occurring on sparse background activity. Somatic APs can backpropagate from soma into basal and apical dendrites and locally generate dendritic calcium spikes. The critical AP frequency for generation of such dendritic calcium spikes can be very different depending on cell type or brain ar...

Dysmyelination of auditory afferent axons increases the jitter of action potential timing during high-frequency firing.

Auditory neuropathies are linked to loss of temporal acuity of sound-evoked signals, which may be related to myelin loss. However, it is not known how myelin loss affects the waveform and temporal precision of action potentials (APs) in auditory CNS nerve terminals. Here we investigated the excitability of the calyx of Held nerve terminal in dysmyelinated auditory brainstems using the Long-Evan...

Spontaneous Collective Action∗

We propose a dynamic, probabilistic model of collective action. While agents’ incentives are approximately captured by the normal form suggested in Palfrey and Rosenthal (1984), agents’ behavior is only boundedly rational. The model deÞnes a discrete time, discrete state Markov process. We identify the process’ unique limiting distribution and show that in the long-run even in large populations...