Example: ant pheromone paths

Within ants, there can be a path left for others to follow, but what about natural paths in our environment that influence us to take them because of the idea of the "path of least resistence" or the effects of having paved cow paths.

Similarly being lead by "the company that you keep".

relathionship to research on hanging out with fat people tending to make one fatter.

Testing annotation -- Concerted like a Concert.

the ants registration can be made more robust by removing the Translate transform and using use initial_moving transform. i do like the transform parameters here:

https://github.com/nipy/nipype/blob/master/examples/fmri_ants_openfmri.py#L202