ECT is more effective than TMS for severe, psychotic or life-threatening depression, with remission rates around 50 to 70 percent, but requires general anesthesia and causes memory side effects. TMS has remission rates around 30 to 50 percent in treatment-resistant patients, no anesthesia, no cognitive effects, and you drive yourself home. Most patients try TMS first unless severity demands ECT.
The right choice depends on how sick you are, how fast you need relief, and how much the side effects of each matter to you. This page lays the two side by side so you can have an informed conversation with your psychiatrist. Stedfast offers Deep TMS at Palm Beach Gardens; we refer for ECT when it is the better option.
Who it is for
TMS suits adults with moderate to severe major depression who have failed medication, can attend daily outpatient sessions for six weeks, and want to avoid anesthesia and cognitive side effects. ECT suits patients with the most severe illness: depression with psychotic features, catatonia, refusal to eat or drink, imminent suicide risk, or depression that has not responded to TMS, Spravato and multiple medications. ECT is also the treatment of choice when speed is critical, since it typically works within two to three weeks. Older adults with severe depression often respond especially well to ECT, while older adults with moderate depression often prefer TMS because it carries no anesthesia risk and no fall risk.
How it works
ECT passes a brief electrical current through electrodes placed on the scalp while you are under general anesthesia and a muscle relaxant. The current induces a generalized seizure lasting about 30 to 60 seconds. It is the seizure, not the current, that produces the therapeutic effect, through widespread changes in neurotransmitter release, neuroplasticity and connectivity. ECT is given two or three times a week for six to twelve treatments. TMS uses magnetic pulses to induce a small, local current in the prefrontal cortex while you are awake. No seizure is produced; the therapeutic effect comes from repeated subthreshold stimulation that gradually changes circuit activity. TMS is given five days a week for about six weeks. ECT acts on the whole brain and is more powerful; TMS acts on one circuit and is more selective.
ECT produces remission in roughly 50 to 70 percent of patients with severe major depression, and in 60 to 80 percent of those with psychotic depression, in controlled studies.
Source: UK ECT Review Group, The Lancet, 2003; Petrides et al., Journal of ECT, 2001
Deep TMS produced remission in 32.6 percent of treatment-resistant patients in its pivotal trial, and real-world registries report remission of roughly 30 to 50 percent and response of 60 to 75 percent.
Source: Levkovitz et al., World Psychiatry, 2015; Roth et al., Psychiatry Research, 2023
A randomized comparison of rTMS and ECT in 46 patients found ECT superior overall, driven by patients with psychotic depression; in non-psychotic patients the two treatments did not differ significantly.
Source: Grunhaus et al., Biological Psychiatry, 2000
A systematic review of 10 comparative studies found ECT more effective than rTMS for severe depression, with rTMS having substantially fewer cognitive side effects.
Source: Ren et al., Progress in Neuro-Psychopharmacology and Biological Psychiatry, 2014
What to expect
With TMS you arrive, sit in a chair for 20 minutes, and leave. With ECT you arrive fasting, receive an IV, go under anesthesia for about 10 minutes, wake in recovery over 30 to 60 minutes, and must have someone drive you home. You cannot drive during an ECT course. ECT patients commonly experience confusion for an hour or so after each treatment and gaps in memory for events around the treatment period, which usually resolve within weeks but occasionally persist for some memories. TMS patients experience none of that. ECT often shows improvement within the first week or two; TMS usually takes three to four weeks to show clear mood change.
Benefits
- TMS: no anesthesia, no seizure, no memory loss, drive yourself, no recovery time
- ECT: highest remission rate of any depression treatment, fastest onset, effective for psychotic and catatonic depression
- Both: covered by Medicare and most commercial insurers for depression that has failed medication
- Both: can be followed by maintenance treatment if depression returns
Risks and side effects
TMS side effects are scalp discomfort and headache in the first week, with a rare seizure risk under 0.1 percent per course and no cognitive effects. ECT side effects include post-treatment confusion, headache, muscle aches, nausea from anesthesia, and memory impairment that is usually temporary but can be persistent for some autobiographical memories, especially with bilateral electrode placement. ECT carries the risks of general anesthesia, which are low in healthy patients but meaningful in those with cardiac or pulmonary disease. ECT mortality is estimated at about 2 per 100,000 treatments, comparable to minor surgery.
Cost and insurance
Both treatments are covered by Medicare and most commercial plans for depression that has not responded to medication, with prior authorization required by most commercial plans for either. ECT costs more per treatment because it involves an anesthesiologist, a facility fee and recovery, but requires fewer treatments; the total course cost is often similar. TMS is delivered in our office with no facility fee. For self-pay TMS, ask our TMS coordinator for current self-pay rates. ECT is provided at hospital-based programs to which we refer.
Side-by-side comparison
| Feature | TMS | ECT |
|---|---|---|
| Mechanism | Magnetic pulses induce focal current in prefrontal cortex; no seizure | Electrical current induces generalized seizure under anesthesia |
| Setting | Outpatient office | Hospital or surgical center |
| Anesthesia | None | General anesthesia plus muscle relaxant every treatment |
| Schedule | 5 days a week, 6 weeks, then taper; 36 sessions | 2 to 3 times a week, 6 to 12 treatments |
| Session time | About 20 minutes | About 10 minutes of treatment, 1 to 2 hours including prep and recovery |
| Onset | 3 to 4 weeks | 1 to 2 weeks |
| Remission rate | About 30 to 50 percent in treatment-resistant patients | About 50 to 70 percent in severe depression, higher in psychotic depression |
| Memory effects | None | Temporary confusion and memory gaps; occasionally persistent |
| Driving | Drive yourself | No driving during the course |
| Best for | Moderate to severe depression after medication failure; OCD; anxious depression | Psychotic, catatonic or life-threatening depression; rapid response needed |
| Insurance | Medicare and most commercial plans | Medicare and most commercial plans |
When ECT is the right first choice
We refer for ECT rather than starting TMS when depression includes psychotic features such as delusions of guilt or ruin, when a patient has stopped eating or drinking, when catatonia is present, when suicide risk is imminent and does not respond to hospitalization and medication, or when a patient has had an excellent response to ECT in the past. In these situations the speed and power of ECT outweigh its side effects. ECT is also appropriate during pregnancy when severe depression threatens the mother's safety, with obstetric monitoring.
When TMS is the right first choice
TMS is the right first choice for the much larger group of patients with moderate to severe depression who have failed two or more antidepressants, are safe as outpatients, and want to avoid anesthesia and memory effects. This includes most people with treatment-resistant depression, nearly everyone whose main complaint about prior treatment is side effects, working adults who cannot take weeks off, older adults with medical conditions that make anesthesia risky, and patients with comorbid anxiety or OCD for which Deep TMS carries specific clearances.
Using both
The two treatments are not rivals; they are rungs on a ladder. A common sequence is medication, then TMS, then Spravato or ECT if TMS fails. Another common sequence is ECT for an acute severe episode, then TMS to maintain remission without ongoing anesthesia. Maintenance ECT is effective but burdensome; maintenance TMS, given as needed when early symptoms return, is easier to sustain. If you have had ECT elsewhere and are now stable, our psychiatrists can manage the transition to TMS maintenance at Palm Beach Gardens.
What the comparison studies say
Direct comparisons are limited because the two treatments are usually offered to different patients. The Grunhaus trials in Israel randomized about 40 patients each time and found ECT superior overall, with the difference driven by psychotic depression; in non-psychotic patients the outcomes were similar. The 2014 systematic review by Ren and colleagues pooled 10 studies and concluded that ECT was more effective for severe depression while rTMS had far fewer cognitive side effects. A 2024 network meta-analysis reached the same conclusion. No trial has compared Deep TMS specifically with ECT. The practical reading is that ECT wins on power, TMS wins on tolerability, and the right choice depends on which matters more for you right now.
Questions to ask your psychiatrist
- How severe is my depression on a standardized scale, and does it include psychotic features?
- How quickly do I need to improve, and is it safe for me to wait three to four weeks for TMS to work?
- Do I have medical conditions that make anesthesia risky?
- How important is it to me to keep working and driving during treatment?
- Have I responded to either treatment before?
- What is the plan if the first choice does not work?
Deep TMS in Palm Beach Gardens
Stedfast Psychiatry delivers Deep TMS at our Palm Beach Gardens office, 11641 Kew Gardens Ave, Suite 209, just off PGA Boulevard and I-95. Patients travel to us from Jupiter, West Palm Beach, Boynton Beach, Stuart and Royal Palm Beach, and most find the drive manageable because a Deep TMS session takes about 20 minutes and you drive yourself home. Call (561) 437-2199 to schedule a TMS consultation, or ask your current Stedfast provider for an internal referral. Our TMS coordinator handles insurance verification, prior authorization and scheduling so you can start as soon as approval comes through.
Frequently asked questions
Is TMS as effective as ECT?
Not for the most severe depression. ECT remains the most effective single treatment, with remission rates of 50 to 70 percent in severe illness and higher in psychotic depression. TMS remission in treatment-resistant patients runs about 30 to 50 percent. For moderate, non-psychotic depression the gap narrows and some comparisons find no significant difference. TMS trades some effectiveness for a much better side-effect profile, which is why it is usually tried first.
Is TMS a type of shock therapy?
No. Shock therapy is an old term for ECT, which uses electrical current to induce a seizure under anesthesia. TMS uses magnetic pulses, induces no seizure, requires no anesthesia and does not affect memory. The only thing they share is that both stimulate the brain directly rather than through medication. Confusing the two is one of the most common reasons people avoid TMS unnecessarily.
Which works faster?
ECT. Many patients show improvement after two to four treatments, within the first two weeks. TMS usually takes three to four weeks for clear mood improvement, with early changes in sleep and energy around week two. If you are in a situation where speed is critical, for example you have stopped eating or you are at imminent risk, ECT or hospitalization comes first and TMS can follow as a maintenance strategy.
Does ECT cause permanent memory loss?
Most memory effects of ECT are temporary: confusion for an hour or so after each treatment, and difficulty forming new memories during the course, which resolves within weeks. Some patients report persistent gaps for autobiographical events around the treatment period, and a minority describe longer-lasting effects, more often with bilateral electrode placement. Modern right unilateral, brief-pulse ECT reduces this considerably. TMS does not cause memory loss of any kind.
Can I do TMS after ECT?
Yes. TMS is frequently used as a maintenance strategy after a successful ECT course, to hold the gains without ongoing anesthesia. It is also used when ECT worked but memory side effects were unacceptable. There is no required waiting period beyond recovery from the final ECT treatment, and insurers generally cover TMS in this situation given the documented severity of your illness.
Can I do ECT if TMS does not work?
Yes, and this is a common sequence. Failing TMS does not reduce your chance of responding to ECT. Many patients prefer to try TMS first because of its low side-effect burden, with ECT held in reserve. If you do not respond after a full TMS course, we will discuss ECT, Spravato and medication augmentation, and we refer to hospital-based ECT programs in Palm Beach County and the Treasure Coast.
Which is safer for older adults?
It depends on the illness. For moderate depression, TMS is safer because it carries no anesthesia risk, no cardiovascular stress and no confusion that could lead to falls. For severe depression with psychotic features, weight loss or refusal to eat, ECT is often the safer choice despite anesthesia because the illness itself is dangerous and ECT works quickly. Older adults respond well to both, and Medicare covers both.
Where this treatment is offered
Conditions this treats
If you are in crisis, call or text 988 or go to the nearest emergency room. Educational content; individual results vary. Reviewed by Dr. David Husted, board-certified psychiatrist.