Setting Stimulus Weight and selecting Node in Jupyter Notebook

[Pallab K]

Dear TVB Community,

I am trying to run a simulation with stimulus in a single node. (For e.g Frontal_Lobe).

1. How do I find that out node number of my Region-of-Interest?

2. How do I set the Stimulus Weight to it?

P.S : I tried running with the simulate_region_stimulus.py demo file given with the TVB package, but I always get the error "ValueError: shape mismatch: value array of shape (1,67,1) could not be broadcast to indexing result of shape (1,69,1)"  while running the Simulator.

Thanks in advance for the help!

Best,

Pallab

[WOODMAN Michael]

hi,

The connectivity datatype contains the list of ROI names for each node in the network, so you can use something like np.argwhere(conn.region_labels == 'Frontal_Lobe') to get indices.  Once you have these indices, you set the weights in a numpy array, as shown in the demo 

https://nbviewer.thevirtualbrain.org/url/docs.thevirtualbrain.org/demos/simulate_region_bold_stimulus.ipynb

If you have such a shape error, your weights array may not be the right shape. 

cheers,

Marmaduke

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