Electroconvulsive therapy, or ECT, is a hospital treatment for severe depression. A brief electrical current is used to bring on a short, controlled seizure while the person is under general anaesthetic. It is given by psychiatrists, not psychologists, and Gecko House does not provide it. This summary is offered because people affected by depression often ask about it.
An observational study followed 206 patients with major depression who were receiving both antidepressant medication and ECT. Of them, 130 were adolescents and 76 were adults. After accounting for other differences between patients, ECT helped 86.5% of adults to a meaningful degree, compared with 65% of adolescents. Full remission was reached by 45.6% of adults and 28.1% of adolescents. Attention improved after ECT. Overall thinking ability, language and delayed memory declined.
ECT eased depression for many people in this study. It worked better in adults than in adolescents. It also carried measurable effects on memory and thinking, which is one reason the decision to use it is made carefully with the treating psychiatrist. If you are struggling with depression, your GP or a psychologist can help you understand the full range of options.
What the researchers did
This was an observational study, which means the researchers followed patients receiving treatment as usual and recorded what happened, rather than randomly assigning people to groups. It included 206 patients with major depressive disorder, all receiving a combination of antidepressant medication and a standardised course of ECT. Of these, 130 were adolescents and 76 were adults. Depression severity was measured with the Hamilton Depression Rating Scale, and thinking ability was measured with the Montreal Cognitive Assessment, a brief test covering areas such as memory, attention, language and naming. The researchers used a statistical technique called analysis of covariance to adjust for other factors that differ between patients and could otherwise distort the comparison.
What they found
After adjustment, ECT was effective for 86.5% of adults, significantly higher than the 65% seen in adolescents. Remission, meaning depression symptoms dropped to a low level, was reached by 45.6% of adults and 28.1% of adolescents. So the treatment helped a majority in both age groups, but the response was stronger in adults.
The study also looked at what predicted a good response in adolescents. Three factors stood out: the number of previous hospital admissions, the presence of psychotic symptoms at the start, and scores on the cognitive-language part of the Montreal Cognitive Assessment.
On thinking and memory, the picture was mixed. Attention improved after ECT. At the same time, overall cognitive function, language ability and delayed memory declined. One specific finding ran in opposite directions by age: on the naming task, adolescents showed a trend towards improvement, while adults showed a significant worsening.
Why it matters in practice
ECT is generally reserved for severe depression, for depression that has not responded to other treatments, or for situations where a fast response is needed for safety. It is delivered by psychiatrists in a hospital setting, under general anaesthetic, and it sits outside the scope of psychological practice. Gecko House does not provide ECT. Findings like these help patients and families have a more informed conversation with the treating team: ECT can reduce depression for many people, the chance of a full response appears lower in adolescents than in adults, and effects on memory and other thinking skills are part of the picture and need to be weighed.
The limits
Because this study was observational rather than randomised, it cannot prove that ECT caused every change that was recorded. Other influences, including the medication everyone was taking and the natural course of a depressive episode, cannot be fully separated out. The adolescent and adult groups were of unequal size, and the study was carried out in one clinical setting with one protocol, so the numbers may not transfer directly elsewhere. Cognitive effects were tracked with a brief screening test rather than a detailed neuropsychological assessment, and the follow-up period described here is short. A short screening test can miss smaller shifts in memory or planning that a fuller assessment would detect, whether for better or worse. None of this settles the decision for any individual. That decision belongs with the person and their psychiatrist, who can weigh severity, urgency, past treatment and the risks described here. If depression is affecting your life, a GP or psychologist can help you look at the options and support you alongside any medical care.