What Is a “Coil” in Deep TMS?
In BrainsWay Deep TMS, a coil is the part inside the helmet that sends gentle magnetic pulses into the brain. Each type of coil is shaped and placed differently to target specific brain regions that are involved in mental health conditions.
Think of it like using different tools for different jobs—just like you'd use a wrench for one bolt and a screwdriver for another.
H1 Coil – For Depression Targets: Left dorsolateral prefrontal cortex (DLPFC) Why? This part of your brain helps control mood, motivation, and decision-making. People with depression often have an underactive DLPFC—it’s like that area is running low on power. The H1 coil stimulates this area to “wake it up” and help rebalance brain activity.
Think of it like charging a phone battery—in this case, it’s your mood control center!
H7 Coil – For OCD (Obsessive-Compulsive Disorder) Targets: Anterior cingulate cortex (ACC) and medial prefrontal cortex (mPFC) Why? These areas are involved in worry, error detection, and habits. In OCD, this system can go into overdrive, making you feel stuck in loops (like washing hands repeatedly or checking things). The H7 coil helps reduce overactivity in this loop so your brain can let go of unwanted thoughts or actions.
Think of it like helping a stuck record finally move to the next song.
H4 Coil – For Smoking Addiction Targets: Bilateral insular cortex and prefrontal cortex Why?
These areas play a key role in craving and self-control. In people who are addicted to smoking, these areas light up when they see or think about cigarettes. The H4 coil helps calm those cravings and strengthen self-control, making quitting easier.
It’s like turning down the volume on cravings to make healthier choices.
Summary Table (Simple) Coil Targets Treats What it Helps H1 DLPFC (left front brain) Depression Improves mood, energy, motivation H7 ACC + mPFC (middle front brain) OCD Reduces compulsions and worry loops H4 Insula + PFC (deep + front brain) Smoking addiction Reduces cravings and improves self-.
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