concept

daughter branches

Also known as: daughter branch

Facts (15)

Sources

Branching morphology determines signal propagation dynamics in ... nature.com Nature Aug 21, 2017 15 facts

measurementIn an experimental setup with a 0.1 cm trunk and daughter branches of different lengths but identical radii, high-frequency spike trains at 154 Hz propagate fully along the shorter branch, while the longer branch exhibits a '5:1' firing pattern where every sixth spike fails.

claimIn axons with high geometric ratios that still allow propagation, reflection can occur where one action potential spike continues into the daughter branches while another spike reverses into the mother branch.

claimIn the 'Several' activity pattern, more than one spike succeeds in propagating into the daughter branches of an axon, similar to the 'Single' pattern.

claimStockbridge demonstrated that at branching points with short and long daughter branches, only the first spike of an adjacent pair invades the long branch, while both spikes propagate into the short branch.

claimConstructing a branched axon by concatenating an axonal segment to one daughter branch of a symmetric branching point—while maintaining an identical geometrical ratio (GR)—results in asymmetric responses when stimulated with high-frequency current spikes.

claimResponses in daughter branches of axons are identical if the geometrical ratio (GR) is the same, regardless of differences in the radii of the branches.

procedureIn the study of axonal branching, researchers induced current pulses at the upstream edge of the mother branch and measured the resulting responses along the two daughter branches.

claimBranched axonal segments, where a mother branch bifurcates into two daughter branches, exhibit a range of activity response patterns from regular intermittent trains to stuttering irregular patterns.

claimSignal propagation at intermediate frequencies in branched axons is modulated symmetrically based on the geometrical ratio (GR) value along the two daughter branches.

measurementAt intermediate stimulus frequencies (51–146 Hz, based on parameters in Supplementary Table S1), branched axons exhibit symmetric firing patterns between daughter branches, even when the branching points are geometrically asymmetric.

claimConduction block at axonal branching points can occur either sequentially in one branch before the other or simultaneously in both daughter branches.

measurementMeasurements of axonal branching points with two different radii showed that the two daughter branches exhibit different responses.

claimAt high stimulus frequencies, branched axons exhibit asymmetric firing patterns between daughter branches due to the combined effects of unbranched and branched behavior repertoires.

claimIn branched axons where short trunks bifurcate into short and long daughter branches, high-frequency signal trains pass into short branches but fail in long branches, leading to fragmented patterns.

claimIn the 'Single' activity pattern, only the first spike of the train is transmitted into the daughter branches of an axon.