If someone mentions electroconvulsive therapy, or ECT, what is the first image that comes into your mind?
For many people, it isn’t a modern hospital treatment.
It’s a frightening scene from an old movie. Someone strapped to a bed. A dramatic electrical shock. A procedure being used as punishment rather than treatment.
And if that is your only reference point, it makes complete sense that the words electroconvulsive therapy might sound alarming.
But modern ECT is very different from the images that have shaped our cultural understanding of it.
Today, electroconvulsive therapy is a carefully controlled medical treatment performed under general anesthesia, with continuous medical monitoring. It can be considered for certain serious mental health conditions, particularly severe depression that hasn’t responded adequately to other treatments.
For someone who has spent months or even years trying medication, therapy and other approaches without getting the relief they desperately need, ECT may be one of the options a psychiatrist discusses.
So, what is ECT, how does it work, what actually happens during treatment, and what should you know about its possible side effects?
Let’s take some of the mystery out of it.
What Is ECT?
Electroconvulsive therapy (ECT) is a medical treatment that uses a carefully controlled electrical stimulus to produce a brief seizure in the brain while a person is under general anesthesia.
I know. The word seizure can immediately make this treatment sound frightening.
But this isn’t an uncontrolled seizure happening unexpectedly.
The procedure takes place in a medical environment. The person is unconscious under anesthesia, medication is given to relax the muscles, and a healthcare team monitors the heart, oxygen levels and brain activity throughout the procedure.
ECT has been used in psychiatry for decades, but the way it is administered today has changed enormously from its earliest forms.
Modern anesthesia, muscle relaxants, precise electrical dosing, different electrode placements and extensive monitoring have all made contemporary ECT very different from the historical versions many people have seen portrayed on television and in films.
Who Might Be Offered ECT?
ECT isn’t usually the first treatment offered to someone who says, “I’ve been feeling a little low lately.”
It tends to enter the conversation when a mental health condition is particularly severe, urgent or difficult to treat.
One of the most common reasons is severe major depression, especially when other treatments haven’t provided sufficient relief.
Imagine you’ve done what people keep telling you to do.
You’ve gone to therapy.
You’ve tried one antidepressant, then another.
You’ve adjusted doses.
You’ve changed medications.
You’ve worked on sleep, routines and coping strategies.
You’ve kept going even when you haven’t felt like yourself.
And you’re still deeply depressed.
That experience can be exhausting in a way that’s difficult to explain to someone who hasn’t lived through it.
When depression hasn’t responded adequately to several appropriate treatments, clinicians may describe it as treatment-resistant depression. Depending on the individual circumstances, ECT may then become one of the treatments worth considering.
ECT can also be considered when depression is so severe that waiting several weeks for another treatment to potentially work could pose significant risks.
That may include depression involving severe suicidal thoughts, psychotic symptoms, profound withdrawal, inability to eat or drink adequately, or an inability to function safely.
Doctors may also use ECT in certain cases of catatonia, severe mania and other serious psychiatric conditions.
There are also circumstances in which medication choices are complicated by other medical considerations. In those situations, a specialist may weigh the potential risks and benefits of ECT alongside the other available treatments.
The important point is this:
ECT is an individualized medical decision.
Whether it’s appropriate depends on your diagnosis, symptoms, medical history, previous treatments, medications, personal preferences and potential risks. A psychiatrist and the wider medical team need to assess all of those factors.
Why Would Someone Choose ECT for Depression?
This is an important question because ECT is obviously more involved than taking a tablet at home.
The answer often comes down to two things: severity and speed.
Antidepressants can take time to produce a meaningful improvement. And unfortunately, not every medication works for every person.
When someone is experiencing profound depression, particularly depression involving psychosis, catatonia, severe physical deterioration or an immediate risk to life, clinicians may need a treatment capable of working more quickly.
ECT is recognized as one of the most effective treatments available for severe depression, although no treatment works for everyone.
Some people experience substantial improvement during an acute course of ECT. Others have a partial response, and some don’t respond sufficiently.
That’s why I don’t think it’s helpful to talk about ECT as either a terrifying last resort or a miracle cure.
Neither description gives you the full picture.
It’s a medical treatment with potential benefits, limitations and side effects that deserve a thoughtful conversation.
What Happens During an ECT Treatment?
One of the best ways to reduce fear around ECT is simply to understand what actually happens.
A modern ECT session involves several stages.
Before the procedure
Before beginning a course of ECT, you’ll typically have a medical and psychiatric assessment.
Your clinicians need to understand your general health, medications, previous response to treatments and any factors that might affect anesthesia or the procedure itself.
You’ll also receive instructions about things such as eating, drinking and taking medications before treatment.
You receive general anesthesia
During the actual procedure, an anesthetic is administered.
That means you’re unconscious during the electrical stimulation.
A muscle relaxant is also given. This significantly reduces the physical muscle contractions that would otherwise occur during a seizure.
This is one of the major differences between modern ECT and the frightening historical images people often associate with the treatment.
Your body and brain are monitored
The clinical team monitors you closely throughout treatment.
Monitoring can include your heart rhythm, blood pressure, oxygen levels and electrical activity in the brain.
Electrodes are positioned on the scalp so the treatment can be administered.
There are different approaches to electrode placement, including right unilateral and bilateral placements. The clinical team chooses the approach based on factors such as effectiveness, previous response and the goal of reducing cognitive side effects where possible.
A brief electrical stimulus is delivered
Once you’re anesthetized and your muscles are relaxed, a psychiatrist administers a carefully controlled electrical stimulus.
This triggers a brief seizure in the brain.
Because you’ve received a muscle relaxant, you won’t have the dramatic full-body convulsions people may associate with an untreated seizure.
The medical team monitors the seizure and your vital signs throughout.
You wake up in recovery
After the procedure, you’re moved to a recovery area as the anesthetic wears off.
You may initially feel sleepy or confused. Some people experience headache, nausea, muscle discomfort or jaw soreness.
You’ll continue to be monitored until the medical team is satisfied that you’ve recovered sufficiently from the procedure and anesthesia.
Because anesthesia can temporarily affect coordination, judgment and reaction time, you’ll receive specific instructions about driving and other activities following treatment.
How Many ECT Treatments Do You Need?
ECT usually isn’t a single treatment.
An acute course of ECT commonly involves multiple treatments delivered over several weeks. The exact number and frequency vary according to the person’s condition, response and the protocol used by the treatment center.
You might hear figures such as six to twelve treatments discussed as a typical course, but this shouldn’t be interpreted as a fixed prescription.
Some people need fewer sessions.
Some need more.
Clinicians assess symptoms and side effects throughout treatment and adjust the plan accordingly.
And improvement doesn’t necessarily mean treatment ends and depression can never return.
That brings us to an important part of the conversation that sometimes gets overlooked.
How Does ECT Work in the Brain?
Here’s where things become fascinating, and a little more complicated.
We know ECT can produce powerful antidepressant effects in some people, but scientists don’t yet have one single, complete explanation for why it works.
That’s not unusual in psychiatry. The brain is extraordinarily complex, and treatments can influence multiple systems simultaneously.
Research suggests that ECT affects brain networks, chemical signaling, neuroendocrine systems and neuroplasticity.
Rather than thinking of ECT as simply “sending electricity through the brain,” it may be more useful to think about the controlled seizure as triggering a cascade of biological changes.
1. ECT may change communication across brain networks
Depression isn’t simply a matter of having too little of one chemical.
Our understanding has become much more sophisticated than that.
Mood, motivation, memory, attention and emotional regulation involve interconnected brain regions and networks. In severe depression, patterns of communication across some of these networks may be disrupted.
The seizure produced during ECT creates widespread changes in brain activity and may alter how important networks communicate with one another.
You will sometimes hear this described informally as a “reset.”
I would be careful about taking that word too literally. Your brain isn’t a computer being switched off and back on.
But the analogy can help us understand the broader idea: ECT may interrupt or modify patterns of brain activity associated with severe illness.
2. ECT affects hormones and neurochemical signaling
Severe depression can also involve changes in the systems responsible for the body’s response to stress.
One system researchers have studied extensively is the hypothalamic-pituitary-adrenal, or HPA, axis.
This system helps regulate our stress response and cortisol production.
ECT appears to influence neuroendocrine activity as well as several neurotransmitter and neuropeptide systems. Researchers continue to investigate how these changes contribute to its antidepressant effects.
Again, the key is that ECT probably doesn’t work through one simple mechanism.
It creates a much broader biological response.
3. ECT may promote neuroplasticity
This is another particularly interesting area of research.
Neuroplasticity is the brain’s ability to change and adapt by modifying connections between nerve cells.
Research suggests ECT can affect biological processes involved in neuroplasticity, including pathways associated with brain-derived neurotrophic factor (BDNF).
BDNF plays an important role in the health, survival and adaptability of neurons.
Animal research and human neuroimaging studies have also led scientists to investigate structural changes associated with ECT, particularly in areas such as the hippocampus.
That doesn’t mean we can say, “ECT works because it grows new brain cells,” and consider the question solved.
The reality is more nuanced.
But evidence that ECT influences neuroplastic processes gives researchers another important clue about why repeated treatments can produce substantial changes in depressive symptoms for some people.
Does ECT Hurt?
During the procedure itself, you’re under general anesthesia, so you aren’t conscious of the electrical stimulation.
You may, however, experience physical side effects after treatment.
These can include:
- Headache, nausea, muscle soreness or jaw discomfort
- Temporary confusion or disorientation after waking
- Difficulty remembering events around the treatment period
- Gaps in memories from before treatment
Most immediate physical symptoms are short-lived and can often be managed medically.
Memory, however, deserves a more detailed conversation.
Does ECT Cause Memory Loss?
If you’re researching ECT, there’s a good chance this is one of your biggest concerns.
And it’s a reasonable one.
ECT can affect memory.
Some people have difficulty forming or retaining memories around the period in which they’re receiving treatment. Others experience retrograde amnesia, meaning they have difficulty recalling events that happened before ECT.
Memory effects vary considerably from person to person.
Some cognitive difficulties improve after the treatment course ends, while gaps in autobiographical memories can persist for some individuals.
The risk can also be influenced by factors including electrode placement, electrical dose, treatment frequency and individual susceptibility.
So this isn’t a side effect I would minimize.
At the same time, severe depression itself can significantly impair concentration, attention and memory. As depression improves, some aspects of cognitive functioning may improve too.
If you’re considering ECT, ask your psychiatrist specifically about memory, not just “side effects” in general.
Ask what type of ECT they’re recommending.
Ask why they’re recommending that approach.
Ask how they’ll monitor your cognition.
And ask what they’ll do if memory problems become significant.
You deserve enough information to make an informed decision.
What Happens After a Course of ECT?
This is another piece of the puzzle that matters.
ECT can treat an acute depressive episode, but it doesn’t necessarily remove the underlying vulnerability to future depression.
Relapse is possible.
For that reason, treatment after an acute ECT course may include antidepressant medication, psychotherapy, other psychiatric treatment or, for selected patients, continuation or maintenance ECT.
This is where I want to broaden the conversation beyond the procedure itself.
When you’ve been severely depressed, getting relief from the immediate symptoms is enormously important.
But recovery is also about rebuilding a life that can support you.
That might mean learning to recognize your early warning signs.
It might mean addressing chronic stress.
It could involve examining the expectations you place on yourself, especially if you’re someone who spends most of your life looking after everybody else.
It may mean rebuilding relationships, routines and confidence after a long period of illness.
And it often means accepting that ongoing support isn’t evidence that treatment has failed.
It’s part of taking care of yourself.
ECT Isn’t a Moral Failure, or Something You Have to Fear in Silence
I work with women who are very good at helping other people.
They’re often the person everyone calls.
The capable one.
The caring one.
The woman who knows what to say when somebody else is struggling.
And yet when they’re the one who can’t get out of bed, can’t feel joy, can’t concentrate or can’t make themselves “snap out of it,” they can judge themselves incredibly harshly.
Severe depression is not a problem you solve by becoming more disciplined.
And needing a higher level of psychiatric treatment doesn’t mean you didn’t try hard enough.
If ECT has been recommended to you, you don’t have to immediately say yes.
You also don’t have to immediately say no because of something you’ve seen in a film.
You can get information.
You can ask questions.
You can discuss alternatives.
You can ask about benefits and risks.
You can involve people you trust.
And you can make the decision together with qualified healthcare professionals who understand your individual situation.
Questions to Ask Your Psychiatrist About ECT
If you’re considering electroconvulsive therapy, go into the conversation with questions.
You might want to ask:
Why are you recommending ECT for me specifically?
What other treatment options are available at this point?
How quickly might we know whether I’m responding?
What type of electrode placement are you recommending, and why?
What are the possible memory and cognitive side effects?
How will you monitor those side effects during treatment?
How many sessions do you anticipate?
What happens if I don’t respond?
What would cause you to change or stop the treatment?
What is the plan for preventing relapse afterward?
If you’re worried, say you’re worried.
If memory loss is your biggest fear, say that.
If you’ve seen disturbing portrayals of ECT and can’t get those images out of your head, tell your clinician.
A good informed-consent conversation isn’t about persuading you not to be afraid.
It’s about giving you accurate information so you can understand what you’re considering.
What Is ECT? The Most Important Thing to Remember
So, what is ECT and how does it work?
Electroconvulsive therapy is a medical treatment in which a carefully controlled electrical stimulus produces a brief therapeutic seizure while the patient is under general anesthesia.
It’s most commonly associated with severe depression, particularly when symptoms are urgent or haven’t responded sufficiently to other treatments. It may also be used for conditions such as catatonia and certain severe mood episodes.
We don’t yet have one complete biological explanation for its effects. Current research suggests that ECT influences interconnected brain networks, neurochemical and neuroendocrine systems, and processes associated with neuroplasticity.
For some people with severe depression, the improvement can be significant and relatively rapid.
But ECT isn’t free from side effects.
Temporary confusion and physical discomfort can occur, and memory loss is a genuine consideration that should be discussed carefully before treatment.
Most importantly, the decision about ECT should never come down to either fear or hype.
It should come down to your individual circumstances, the potential benefits, the potential risks, your preferences and a thorough conversation with your treatment team.
If you’ve been struggling with depression for a long time, you may have reached a point where you’ve started believing nothing will ever change.
Please don’t make that conclusion alone.
There are multiple approaches to treating severe and treatment-resistant depression, and ECT is one of the options that may be considered when appropriate.
Understanding the treatment is the first step toward deciding whether it’s an option worth discussing for you.
This article is for educational purposes and isn’t a substitute for individualized medical advice, diagnosis or treatment. If you’re experiencing suicidal thoughts or feel that you may be in immediate danger, seek urgent help through your local emergency services or crisis service. If you’re struggling with suicidal thoughts or feel like you’re in crisis, you don’t have to navigate that moment alone. Call or text 988 to connect with the 988 Suicide & Crisis Lifeline for confidential crisis support, available 24/7. If you’re in immediate physical danger, call 911 or go to your nearest emergency room.
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