# mne\_forward\_solution resolved ?

**URL:** <https://mne.discourse.group/t/mne-forward-solution-resolved/204>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [February 25, 2010, 5:10pm UTC](https://mne.discourse.group/t/mne-forward-solution-resolved/204 "2010-02-25T17:10:03Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [February 25, 2010, 5:10pm UTC](https://mne.discourse.group/t/mne-forward-solution-resolved/204/1 "2010-02-25T17:10:03Z")

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Hi Everyone,

I had posted about this routine ignoring the dipole moments specified in the source file.

On further consideration it looks like the routine is computing the forward solution for 3 different dipoles at the specified coordinates, each parallel to one of the axes and with dipole moment amplitude of 1.0 Nano-Ampere. Can you confirm that this is correct?

Don

Don Krieger, Ph.D., D.ABNM  
Department of Neurological Surgery  
University of Pittsburgh  
(412)648-9654

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [February 25, 2010, 5:13pm UTC](https://mne.discourse.group/t/mne-forward-solution-resolved/204/2 "2010-02-25T17:13:48Z")

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Hi Don,

Two corrections:

1. The unit of the current dipole moment is Ampere-meter (Am) not  
Ampere (A)

2. The strength of the unit dipoles mne\_forward\_solution uses is  
really the unit of measure, i.e., 1 Am.

- Matti

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [February 25, 2010, 5:17pm UTC](https://mne.discourse.group/t/mne-forward-solution-resolved/204/3 "2010-02-25T17:17:59Z")

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Thank you.

That explains the rather large magnetic field values which I presume are in Tesla for the magnetometers and Tesla/M for the gradiometers.

Don

Don Krieger, Ph.D., D.ABNM  
Department of Neurological Surgery  
University of Pittsburgh  
(412)648-9654

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [February 25, 2010, 5:25pm UTC](https://mne.discourse.group/t/mne-forward-solution-resolved/204/4 "2010-02-25T17:25:45Z")

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Precisely!

- Matti

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