Related Experiment Video
Updated: Aug 18, 2026

Quantitative Analysis of Neuronal Dendritic Arborization Complexity in Drosophila
Published on: January 7, 2019
Sidebranching induced by external noise in solutal dendritic growth
R González-Cinca1, L Ramírez-Piscina, J Casademunt
1Departament de Física Aplicada, Universitat Politècnica de Catalunya, Campus Nord UPC, Mòdul B5, E-08034 Barcelona, Spain. ricard@fa.upc.es
Abstract:
We have studied sidebranching induced by fluctuations in dendritic growth. The amplitude of sidebranching induced by internal (equilibrium) concentration fluctuations in the case of solidification with solutal diffusion is computed. This amplitude turns out to be significantly smaller than values reported in previous experiments. The effects of other possible sources of fluctuations (of an external origin) are examined by introducing nonconserved noise in a phase-field model. This reproduces the characteristics of sidebranching found in experiments. Results also show that sidebranching induced by external noise is qualitatively similar to that of internal noise, and it is only distinguished by its amplitude.
Related Concept Videos
Notch Signaling Pathway
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Propagation of Action Potentials
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
Neurogenesis and Regeneration of Nervous Tissue

