TMS for Depression: Does Brain Stimulation Really Work?

TMS uses magnetic pulses to stimulate brain regions involved in depression. It sounds like science fiction, but it's FDA-approved and covered by most insurance. Here's what you need to know.

How TMS Works

A magnetic coil placed against your scalp delivers focused pulses to the prefrontal cortex—a region underactive in depression. These pulses stimulate neurons and, over multiple sessions, help normalize brain activity.

• Non-invasive (no surgery, no anesthesia)
• Targets the left dorsolateral prefrontal cortex
• Stimulates neurons to fire
• Promotes neuroplasticity over time
• Effects build gradually with repeated sessions

Treatment Protocol

Standard TMS

• 36 sessions total
• 5 days/week for 6 weeks, then taper
• Each session: 20-40 minutes
• Done in outpatient clinic
• No sedation needed

Accelerated TMS (Stanford Protocol)

• 10 sessions per day for 5 days
• Treatment completed in one week
• Uses imaging-guided targeting
• Shows faster results in trials
• Not yet widely available

Effectiveness

For context, these are patients who've failed multiple medications—a population where any treatment struggles.

What Sessions Feel Like

• Tapping sensation on scalp
• Clicking sound from the coil
• Mild discomfort (usually improves over sessions)
• No cognitive effects—drive home after
• Can read, watch videos during treatment

Side Effects

• Scalp discomfort or pain (common, temporary)
• Headache (treatable with OTC meds)
• Facial twitching during treatment
• Seizure (very rare, ~0.01%)

Cost and Coverage

• $200-300 per session without insurance
• $6,000-15,000 for full course
• Most insurance covers after medication failures
• Prior authorization typically required
• Copays vary widely

Who's a Good Candidate

• Treatment-resistant depression (failed 1-2+ medications)
• Can't tolerate medication side effects
• Want to avoid/reduce medications
• No metal implants in head
• No seizure history

The Bottom Line

TMS is a legitimate option for treatment-resistant depression with a solid evidence base. It's well-tolerated, non-invasive, and covered by most insurance after medication failures. The main barrier is the time commitment—36 sessions is a lot. But for people who haven't responded to medications, it's worth considering.