I recently watched a @ted talk about how holding hands activates a part of the brain that controls fear. The man doing the talk was a Clinical Psychologist who worked for many years as a PTSD councillor. .
He spoke about an elderly man who suffered from PTSD after serving in WW2. At their first session, the man brought his wife with him. The Psychologist had no reason to disallow her to come to the session so he went forward with unpacking the root issue. The old man was reluctant to open up, until his wife turned to him and took his hand in hers. The Psychologist said the change in him was almost instant. They continued like this for many sessions to follow, every time the man became uncomfortable his wife would hold his hand and he would continue. .
After seeing this change, the Psychologist ran some trials, he had couples come in for an MRI, where one person would have a brain scan, while being electro shocked. Super stressful situations. Their brains were all alight with fear responces. He then tried having a strange person hold their hand, the results showed aome difference, but it was minimal. He then allowed the person to hold the hand of their loved one while going through the tests. The results were incredible. .
The brains of the test subjects changed drastically. Although they were still showing discomfort and fear, as soon as the brain registered that they were touching their loved one, the fear reaction reduced significantly! .
I think it is INCREDIBLE the effect simple human touch can have. I was truly blown away by this TedTalk.