__Soma_Surface__

This function computes the surface of
the soma (Type=1). If the soma is composed of just one compartment, then
it uses the sphere assumption, otherwise it returns the sum of the
external cylindrical surfaces of compartments forming the soma. There
can be multiple soma's, one soma or no soma at all.

Single
Soma: 4 x
PI x r 2

(Area of Sphere)

Function Output Type : Real

Calculated : At each each soma point

Returns a value : For each soma part of the
arbor

Output:

Results with Single Soma.

Metric | Total_Sum | #Compartments (considered) |
#Compartments (discarded) |
Minimum | Average | Maximum | S.D. |

Soma_Surface | 387.775 | 1 | (1101) | 387.775 | 387.775 | 387.775 | 0 |

*All units are in microns

Values to consider : All

Output Interpretation :

Soma_Surface is computed with the help of two mathematical
formulas.

For single soma: 4*(pi)*(r^2).

For just one soma compartment, the Total_Sum, minimum, average
and maximum values are all the same. If the soma consists of more than
one compartment, then the correct value of the surface of the soma would
be returned under Total_Sum.

The single point spherical soma is converted to three point
cylindrical approximation. The surface area of this soma cylinder equals
the surface area of a sphere of radius r, where the height of the
cylinder equals radius of the spehere. For more details on soma format
click here

References :

This
function is applicable to only Soma Points (Type = 1).