Carol Kivler testimonial and mechanism of action 

I have removed new content on the mechanism of action and an endorsement from Carol Kivler.  Medical content on Wikipedia is strictly governed by guidelines and policies. I'm not sure the Kliver testimonial, or any testimonial, is appropriate for an evidence-based article. A very important guideline is Wikipedia:Identifying reliable sources (medicine). The source (Perrin et al.) for the mechanism of action content does not conform to that guideline.

Perrin et al., an fMRI study of ECT and frontal cortical connectivity in severe depressive disorder, is not appropriate for the claims the new text makes. Per the guideline I linked to above, we rely on expert reviews to put such results into context. This study can be mentioned once a review has done that, if the review gives it sufficient importance to warrant inclusion.

Also, it's important to be very precise in paraphrasing sources. The recent edit said, "The group's findings confirmed the hyperconnectivity hypothesis of ECT" which is stronger than the source's "The findings reported here add weight to the emerging “hyperconnectivity hypothesis” in depression..."  

I'm not contesting the veracity of any of the content. But to be included in Wikipedia, the relevance and accuracy of all medical content must be supported by sources that conform to the above guideline - usually systematic reviews, graduate-level textbooks, national or international professional guidelines, or similar, that can be expected to accurately reflect the current scholarly consensus.