Contraction

Soma_Surface
This function returns the ratio between Euclidean distance of a branch and its path length.
Formula :           AE

AB + BC + CD + DE




Function Output Type : Real

Calculated : At each bifurcation point

Returns a value : For each branch

Command Line Usage Function : "-f23, 0, 0, 10.0"

Output:
Metric Total_Sum #Compartments
(considered)
#Compartments
(discarded)
Minimum Average Maximum S.D.
Contraction 84.1387 85 (1017) 0.887291 0.989867 1 0.019264
*All units are ratios

Values to consider : All

Output Interpretation :

Contraction can be calculated as ratio of Euclidean distance (AE) and Path Length (AB+BC+CD+DE).

Total_Sum = 84.1387 gives Total_Sum, Minimum = 0.887291 gives minimum, Maximum = 1 gives maximum for given input neuron.


References :
Closer is the value towards 1, lesser is the contraction. Closer is the value towards 0, more is the contraction.