How to extract a value from mat file

I have an EEG.mat file and when I open it, I only see EEG data. However, when I run whos this is what I get

Name Size Bytes Class Attributes

EEG_Data1 5400000x1 43200000 double

Fs 1x1 8 double

L 1x1 8 double

P1 1x501 4008 double

P2 1x1000 8000 double

Is there anyway that I know exactly what the value of Fs. I have tried load EEG_Data1.mat Fs but It returned ' undefined Fs'. I do not understand why. Please help me to explain it. Thank you

Answer 1

[Stephen23]

S = load(...)
S.Fs