Yet another self therapy electrical widget.

I've done a number of posts on transcranial direct current stimulation (tDCS). Entering 'transcranial' in MindBlog's search box takes you to posts on tDCS effects on impulse control, memory enhancement, general cognition, etc. Entering tDCS in a google search box gets you a plethora of offered devices costing from $50 to $300+. An article by Kira Peikoff now points to a forthcoming new-agey device called Thync that is claimed to alter your mood as desired ("calm vibes" or "energy vibes"). An interesting clip from that article:

In January, the journal Brain Stimulation published the largest meta-analysis of tDCS to date. After examining every finding replicated by at least two research groups, leading to 59 analyses, the authors reported that one session of tDCS failed to show any significant benefit for users.

Thync developers claim to be bypassing the brain and using pulsed currents to stimulate subcutaneous peripheral nerves to modulate the stress response. The placebo-controlled studies they say they have done to document effectiveness of the procedure have not been published.