Depression can make the brain feel less like a single illness than a system under strain. Thought, attention, motivation, sleep, memory, and emotional regulation can all become harder to access at once. For some people, medication and therapy provide meaningful relief. For others, the struggle continues despite real effort and appropriate care.
At Oasis Therapeutics, we offer TMS therapy for depression as one clinical option for people whose depression has not responded adequately to more conventional approaches. TMS, short for transcranial magnetic stimulation, is FDA-cleared for major depressive disorder. It is not FDA-approved, which is an important distinction: FDA clearance means the device has met the FDA’s applicable standards for safety and effectiveness for its cleared use.
TMS is not a shortcut around the complexity of depression. It is a noninvasive form of brain stimulation designed to engage specific brain networks involved in mood regulation. Understanding that process can make the treatment feel less mysterious.
Depression involves networks, not a single broken switch
The brain does not contain one isolated “depression center.” Mood emerges from communication among many regions, including areas involved in attention, emotional response, planning, reward, memory, and self-reflection. When depression takes hold, those networks may become less flexible or less well coordinated.
One region often discussed in TMS is the left dorsolateral prefrontal cortex, located toward the front and side of the brain. This area helps support executive functions such as organizing information, sustaining attention, weighing options, and regulating responses to difficult emotions. It also connects with deeper brain structures involved in mood and reward.
That connectivity matters. Research examining stimulation of the left dorsolateral prefrontal cortex has found effects across symptom domains in neuropsychiatric conditions, reflecting the region’s place within wider brain networks rather than its role as a stand-alone target (prefrontal stimulation across symptom domains (Kan et al., 2023)). Depression is often experienced as emotional pain, but it can also affect concentration, decision-making, energy, and the ability to imagine a different future.
Magnetic pulses and targeted stimulation
During transcranial magnetic stimulation, a trained clinical team places a magnetic coil against the scalp. The coil produces brief, carefully controlled magnetic pulses. Those pulses pass through the skull and induce a small electrical current in the targeted area of the cortex.
This is not electroconvulsive therapy, and it does not involve anesthesia or intentionally inducing a seizure. The person remains awake and able to communicate throughout the session. The experience is often described as a tapping sensation against the scalp, though comfort and sensation vary from person to person.
The goal is not to force the brain into a particular mood. Instead, repeated stimulation is intended to influence the activity of a selected network over time. Clinical TMS protocols differ in pulse pattern, intensity, target, and schedule. A current consensus review emphasizes that these details, including accurate targeting and protocol selection, are meaningful parts of responsible TMS care (clinical considerations for TMS (Trapp et al., 2025)).
Details matter. We take the time to review your history, current symptoms, medications, prior care, and practical concerns before determining whether TMS may be appropriate.
Neuroplasticity is the brain’s capacity to adapt
Neuroplasticity is the brain’s ability to modify connections and patterns of activity in response to experience. It is happening throughout life. Learning a new skill, recovering after injury, adapting to stress, and building a habit all involve some form of neural change.
In depression, some patterns can become deeply rehearsed: withdrawal, slowed thinking, persistent negative expectation, disrupted sleep, or a sense that nothing will change. These experiences are real, and they are not a moral failure. They can also become self-reinforcing within the brain’s communication systems.
Repeated magnetic stimulation is thought to work, in part, by encouraging changes in how neurons communicate and how networks regulate one another. Scientists are still refining the full explanation, but research on noninvasive brain stimulation (Antal et al., 2022) describes how stimulation can influence cortical excitability and plasticity-related processes. This is one reason TMS is delivered as a course of sessions rather than a single appointment.
Neuroplasticity is not a promise. It is a capacity. Every person’s medical history, depression pattern, and response to treatment is different.
What FDA clearance means, and what it does not
FDA clearance is meaningful, but it should not be treated as a blanket statement that every type of TMS is appropriate for every concern. TMS devices and protocols have specific cleared indications. At our practice, we discuss TMS in the context of our established care for depression, including whether your symptoms, history, and treatment goals fit that discussion.
FDA clearance also does not mean that TMS replaces a complete mental health evaluation. Depression can coexist with anxiety, trauma-related symptoms, substance use concerns, sleep disruption, medical conditions, and medication effects. Good care begins by looking at the whole person.
We may also discuss other services when clinically relevant. For example, ketamine for depression is another treatment option we offer, and ketamine for psychiatric uses is off-label. We also offer SPRAVATO® therapy for treatment-resistant depression. The right conversation is not about finding the most dramatic intervention. It is about understanding what may fit your situation and what does not.
What we emphasize before beginning TMS
We believe patients deserve a straight answer about both the possibilities and the limits of treatment. A TMS consultation is a clinical conversation, not a commitment to proceed.
We typically focus on questions such as:
- What has depression been like for you, and how is it affecting daily life?
- What medications, therapy, or prior treatments have you tried?
- Are there medical considerations, implanted devices, or seizure-related factors that need review?
- What does your schedule realistically allow during a course of care?
- What other supports, including therapy, family, work accommodations, or sleep care, may be important?
The research base for TMS continues to develop across protocols. A large systematic review and dose-response analysis found evidence for noninvasive brain stimulation across several mental disorders, while also underscoring why protocol and diagnosis should not be treated casually (evidence across stimulation approaches (Sabé et al., 2024)). We do not use broad research findings to make broad promises. We use them to guide a careful, individual discussion.
If you are curious how TMS compares to other approaches, our post comparing depression treatments offers a closer look at ketamine therapy, TMS, and other options side by side.
Frequently asked questions
Does TMS change who I am?
TMS is intended to stimulate targeted brain circuits, not alter your identity, values, or personality. Depression itself can make people feel disconnected from themselves. Treatment decisions should always be grounded in your goals, your consent, and a clear understanding of what is being considered.
Is TMS painful?
Some people notice tapping, pressure, or scalp discomfort during treatment, particularly early in a course. Others find the sensation manageable. We encourage you to tell us what you are experiencing so we can address comfort and practical concerns directly.
How do I know whether depression needs clinical attention?
There is no clean line, but duration, severity, and interference with daily functioning are useful markers. If low mood, hopelessness, loss of interest, changes in sleep or appetite, or difficulty functioning have persisted, it is reasonable to seek an evaluation. You can also explore your treatment options with us without assuming that one treatment is automatically right for you.
What if I am having thoughts of self-harm?
If you are in immediate danger, call 911 or go to the nearest emergency department. If you are having thoughts of suicide or need immediate emotional support, call or text 988 to reach the 988 Suicide and Crisis Lifeline (988 Suicide and Crisis Lifeline, n.d.). You do not have to carry that moment alone.
Key takeaways
TMS is a noninvasive treatment that uses magnetic pulses to stimulate selected brain regions involved in mood regulation. It is FDA-cleared for major depressive disorder, not FDA-approved. Its effects are understood through the lens of brain networks and neuroplasticity, though the science continues to evolve.
Most importantly, TMS should be considered in the context of your full clinical picture. Depression is not a failure of effort, and seeking care is not a failure of resilience. If you are in Nashua, NH, and want to talk through whether TMS may be an appropriate option, we welcome you to schedule a consultation with our team. We will give you a thoughtful, direct answer about what we offer and what may make sense for your situation.
Medical disclaimer
The information in this article is for educational purposes only and does not constitute medical advice. TMS and other treatments should be considered only with a licensed provider familiar with your full medical and psychiatric history. Individual results vary, and not all treatments are appropriate for all patients. If you are experiencing a mental health crisis or thoughts of self-harm, call or text 988 or seek emergency care immediately.
Works Cited
1. Kan RLD, et al. Effects of repetitive transcranial magnetic stimulation of the left dorsolateral prefrontal cortex on symptom domains in neuropsychiatric disorders: a systematic review and cross-diagnostic meta-analysis. https://pubmed.ncbi.nlm.nih.gov/36898403/
2. Trapp NT, et al. Consensus review and considerations on TMS to treat depression: A comprehensive update endorsed by the National Network of Depression Centers, the Clinical TMS Society, and the International Federation of Clinical Neurophysiology. https://pubmed.ncbi.nlm.nih.gov/39756350/
3. Antal A, et al. Non-invasive brain stimulation and neuroenhancement. https://pubmed.ncbi.nlm.nih.gov/35734582/
4. Sabé M, et al. Transcranial Magnetic Stimulation and Transcranial Direct Current Stimulation Across Mental Disorders: A Systematic Review and Dose-Response Meta-Analysis. https://pubmed.ncbi.nlm.nih.gov/38776083/
5. 988 Suicide and Crisis Lifeline. https://988lifeline.org/
Disclaimer
This article is for educational purposes only and is not a substitute for individualized evaluation, diagnosis, or treatment from a qualified healthcare professional.