The axon initial segment: an updated viewpoint

C Leterrier - Journal of Neuroscience, 2018 - jneurosci.org
At the base of axons sits a unique compartment called the axon initial segment (AIS). The
AIS generates and shapes the action potential before it is propagated along the axon …

Axon Initial Segment Structure and Function in Health and Disease

PM Jenkins, KJ Bender - Physiological Reviews, 2024 - journals.physiology.org
At the simplest level, neurons are structured to integrate synaptic input and perform
computational transforms on that input, converting it into an action potential (AP) code. This …

Antisense oligonucleotides restore excitability, GABA signalling and sodium current density in a Dravet syndrome model

Y Yuan, L Lopez-Santiago, N Denomme, C Chen… - Brain, 2024 - academic.oup.com
Dravet syndrome is an intractable developmental and epileptic encephalopathy caused by
de novo variants in SCN1A resulting in haploinsufficiency of the voltage-gated sodium …

Sensory input drives rapid homeostatic scaling of the axon initial segment in mouse barrel cortex

N Jamann, D Dannehl, N Lehmann, R Wagener… - Nature …, 2021 - nature.com
The axon initial segment (AIS) is a critical microdomain for action potential initiation and
implicated in the regulation of neuronal excitability during activity-dependent plasticity. While …

Neuron-oligodendrocyte potassium shuttling at nodes of Ranvier protects against inflammatory demyelination

H Kapell, L Fazio, J Dyckow, S Schwarz… - The Journal of Clinical …, 2023 - jci.org
Multiple sclerosis (MS) is a progressive inflammatory demyelinating disease of the CNS.
Increasing evidence suggests that vulnerable neurons in MS exhibit fatal metabolic …

Theoretical relation between axon initial segment geometry and excitability

S Goethals, R Brette - Elife, 2020 - elifesciences.org
In most vertebrate neurons, action potentials are triggered at the distal end of the axon initial
segment (AIS). Both position and length of the AIS vary across and within neuron types, with …

Sensory neurons have an axon initial segment that initiates spontaneous activity in neuropathic pain

AI Nascimento, TF Da Silva, EC Fernandes, LL Luz… - Brain, 2022 - academic.oup.com
The axon initial segment is a specialized compartment of the proximal axon of CNS neurons
where action potentials are initiated. However, it remains unknown whether this domain is …

Neocortical pyramidal neurons with axons emerging from dendrites are frequent in non-primates, but rare in monkey and human

P Wahle, E Sobierajski, I Gasterstädt, N Lehmann… - Elife, 2022 - elifesciences.org
The canonical view of neuronal function is that inputs are received by dendrites and somata,
become integrated in the somatodendritic compartment and upon reaching a sufficient …

Differences in spike generation instead of synaptic inputs determine the feature selectivity of two retinal cell types

S Wienbar, GW Schwartz - Neuron, 2022 - cell.com
Retinal ganglion cells (RGCs) are the spiking projection neurons of the eye that encode
different features of the visual environment. The circuits providing synaptic input to different …

[HTML][HTML] The electrical significance of axon location diversity

MHP Kole, R Brette - Current opinion in neurobiology, 2018 - Elsevier
Highlights•AIS/axon locations within neurons are highly variable.•AIS and soma are coupled
resistively.•Resistive coupling impacts synaptic integration and action potentials.• …