Hello, Misschristianmt.
New but expensive:
Transcranial Magnetic Stimulation (TMS) - magnets, not electricity
PC Blog:
Are New Treatments for Depression Right Under Our Nose? - Yogic breathing, laughing gas...
PC Article:
Depression: New Medications On The Horizon - NMDA receptor antagonists, triple reuptake inhibitors (TRIs), melatonin, brain-derived neurotrophic factor (BDNF)
By PC's Dr. Grohol:
Alternative Approaches in the Treatment of Depression - references ketamine (an NMDA receptor antagonist) and links to a podcast,
Intriguing Approaches to Overcoming Depression
One of my doctors was pushing me toward ECT, whereas my psychiatrist would rather I try TMS if it becomes available in my care system(s).
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My dog

mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.