Ephaptic coupling in white matter fibre bundles modulates axonal transmission delays. - In: PLoS Computational Biology, ISSN 1553-7358, Bd. 17 (2021), 2, e1007858, S. 1-24
Axonal connections are widely regarded as faithful transmitters of neuronal signals with fixed delays. The reasoning behind this is that extracellular potentials caused by spikes travelling along axons are too small to have an effect on other axons. Here we devise a computational framework that allows us to study the effect of extracellular potentials generated by spike volleys in axonal fibre bundles on axonal transmission delays. We demonstrate that, although the extracellular potentials generated by single spikes are of the order of microvolts, the collective extracellular potential generated by spike volleys can reach several millivolts. As a consequence, the resulting depolarisation of the axonal membranes increases the velocity of spikes, and therefore reduces axonal delays between brain areas. Driving a neural mass model with such spike volleys, we further demonstrate that only ephaptic coupling can explain the reduction of stimulus latencies with increased stimulus intensities, as observed in many psychological experiments.
https://doi.org/10.1371/journal.pcbi.1007858
Preface to the Special Issue "Scientific and Clinical Applications of Magnetic Carriers". - In: Journal of magnetism and magnetic materials, ISSN 1873-4766, Bd. 525 (2021), 167667
https://doi.org/10.1016/j.jmmm.2020.167667
Light-field imaging of the human optic nerve head at different wavelengths - a case study. - In: Acta ophthalmologica, ISSN 1755-3768, Bd. 99 (2021), S265, insges. 1 S.
https://doi.org/10.1111/j.1755-3768.2020.0140
Scatter measurement in the human eye based on a Shack-Hartmann wavefront aberrometer with extended field of view. - In: Acta ophthalmologica, ISSN 1755-3768, Bd. 99 (2021), S265, insges. 1 S.
https://doi.org/10.1111/j.1755-3768.2020.0141
Fundus image quality assessment for an eye model with cataract using adapted illumination patterns. - In: Acta ophthalmologica, ISSN 1755-3768, Bd. 99 (2021), S265, insges. 1 S.
https://doi.org/10.1111/j.1755-3768.2020.0150
Photopic negative response during and after ocular direct current stimulation. - In: Acta ophthalmologica, ISSN 1755-3768, Bd. 99 (2021), S265, insges. 1 S.
https://doi.org/10.1111/j.1755-3768.2020.0152
The effect of the stimulus eccentricity on the main component of the steady-state visual evoked potential. - In: Acta ophthalmologica, ISSN 1755-3768, Bd. 99 (2021), S265, insges. 1 S.
https://doi.org/10.1111/j.1755-3768.2020.0181
Offset characteristic of transient and steady-state flash visual evoked potentials. - In: Acta ophthalmologica, ISSN 1755-3768, Bd. 99 (2021), S265, insges. 1 S.
https://doi.org/10.1111/j.1755-3768.2020.0183
Light-field imaging for glaucoma diagnosis - reproducibility on one patient. - In: Acta ophthalmologica, ISSN 1755-3768, Bd. 99 (2021), S265, insges. 1 S.
https://doi.org/10.1111/j.1755-3768.2020.0193
Relationship between breathing gas mixtures and retinal vessel regulation. - In: Acta ophthalmologica, ISSN 1755-3768, Bd. 99 (2021), S265, insges. 1 S.
https://doi.org/10.1111/aos.0187