What to Expect During TMS Treatment

5 min read·Updated October 2026

This guide is general information, not medical advice. Ketamine therapy isn't right for everyone — talk to a licensed clinician about your specific situation.

TMS (transcranial magnetic stimulation) is one of the less dramatic treatments in psychiatry: you sit in a chair, stay fully awake, and drive yourself home afterward. But it's also a big time commitment, and knowing how it unfolds — from the first consultation to the final taper session — makes it much easier to plan around. Here's what a typical TMS course looks like.

The short version

Consultation first: a psychiatric evaluation, safety screening, and (usually) insurance prior authorization.
First treatment: includes motor-threshold mapping to calibrate your dose, so it takes longer than later sessions.
Each session: you're awake in a chair with a coil against your head. Standard sessions typically run about 20–40 minutes; theta-burst sessions can be as short as about 3–10 minutes.
Schedule: typically five days a week for about six weeks, often followed by a taper — roughly 30–36 sessions in total.
Results: some people notice changes within a couple of weeks; for many it builds gradually through the course.

Step 1: The consultation

Before any treatment, a psychiatrist will evaluate you to confirm TMS is appropriate. Expect:

A diagnostic interview and a standardized depression rating scale (such as the PHQ-9 or HAM-D) to establish a baseline.
A medication and therapy history. Insurers usually require documentation of failed antidepressant trials — see does insurance cover TMS for the typical criteria.
Safety screening for metal or electronic implants near the head, seizure history, and other risks. Our TMS side effects guide covers who shouldn't get TMS.

You can typically keep taking your current medications, though your psychiatrist may review anything that lowers seizure threshold.

Step 2: Mapping and your first session

The first treatment session includes motor-threshold determination. The technician places the coil over the motor area of your brain and delivers single pulses at increasing strength until your thumb or fingers twitch. The lowest power that reliably causes that twitch is your motor threshold, and your treatment dose is set relative to it. Because people's thresholds differ, this step individualizes your treatment.

The technician then measures from that spot to locate the treatment target — usually the left dorsolateral prefrontal cortex, a region involved in mood regulation — and records the coil position so it can be reproduced every visit. Expect the first appointment to run longer than later sessions. Mapping is generally repeated only if needed, such as after medication changes.

Step 3: What a typical session is like

You sit in a reclining chair, fully awake. No anesthesia or sedation.
You wear earplugs, because the coil makes loud clicking sounds.
The coil rests against your head and delivers pulses in trains. Most people describe a tapping or knocking sensation on the scalp; some notice facial twitching while the pulses fire.
You can talk, and you can ask the technician to pause at any time.
Afterward, you can drive and return to work or normal activities immediately.

Discomfort is usually most noticeable in the first week or so and fades as you adjust.

Standard TMS vs. deep TMS vs. theta-burst

The FDA has cleared several approaches for depression. They share the same basic idea but differ in equipment and session length:

Standard rTMS (figure-8 coil). The original approach, first FDA-cleared for depression in 2008. Sessions typically run about 20–40 minutes depending on the device and protocol.
Deep TMS (H-coil). Uses a helmet-shaped coil designed to reach a broader, somewhat deeper area. Cleared for depression in 2013 and for OCD in 2018, plus smoking cessation.
Theta-burst stimulation (iTBS). Delivers pulses in rapid bursts, cutting active stimulation to about 3 minutes. It was cleared in 2018 after a large trial (THREE-D) found it worked about as well as standard 10 Hz rTMS.
Accelerated protocols. Multiple sessions per day over about a week, such as SAINT — see our guide to accelerated TMS and SAINT.

Which one a clinic offers usually depends on their equipment. Insurance coverage applies to all the standard FDA-cleared protocols, while accelerated ones are often cash-pay.

The schedule: the real commitment

A standard depression course is five sessions a week for about six weeks, followed by a taper — for example, Aetna's policy covers 30 daily sessions plus 6 tapering sessions over three weeks. That's roughly 30–36 visits in about two months. Missing an occasional day is usually fine, but long gaps can reduce effectiveness, so plan your work schedule and travel accordingly. Clinics close to home or work make the biggest practical difference.

When people notice improvement

TMS usually works gradually. Cleveland Clinic notes you might notice improvement within a couple of weeks, but many people see changes later in the course, and a few respond only near the end. Often, friends or family notice small shifts — better sleep, more energy, more engagement — before mood itself feels different. Your clinic should re-measure your symptoms periodically; if there's no progress partway through, ask the psychiatrist whether to adjust the protocol.

As for outcomes: real-world data suggest roughly half of patients respond and about a third reach remission with a standard course. TMS doesn't work for everyone — which is worth knowing going in.

After the course

Many people stay well for months after a successful course without further treatment.
Medication and therapy usually continue. TMS is often one part of a broader plan.
If symptoms return, a repeat course is an option, and insurers often cover retreatment if you responded well the first time.
Maintenance sessions are offered by some clinics, though insurers frequently don't cover them.

Bottom line

TMS is low-drama but high-commitment: one consultation, one longer mapping session, then about six weeks of short weekday visits, with change typically building gradually. Before you start, check your insurance, budget the time, and ask clinics which device and protocol they use. Our guide to TMS costs covers pricing, and TMS vs. ketamine compares it with faster-acting options. When you're ready, find a TMS provider near you.