Multiple rTMS sessions are needed because the effects of brain stimulation are cumulative. A single session produces temporary changes in brain activity, but repeated sessions are required to create lasting changes in neural pathways and neurotransmitter systems. This is similar to how physical exercise requires consistent sessions to build muscle strength. Typically, patients undergo daily treatments for 4-6 weeks to achieve optimal therapeutic benefits. The brain gradually adapts to the stimulation, leading to more sustained improvements in symptoms over time. Here is why: 1. Building Neural Pathways: rTMS stimulates specific brain areas repeatedly, helping to strengthen and rewire neural connections that influence mood and behavior. This process takes time to fully develop. 2. Cumulative Effect: Each session builds on the previous one, gradually increasing the brain’s responsiveness and creating lasting changes. 3. Consistency for Long-Term Results: Regular sessions help “train” the brain to sustain these improvements even after the treatment ends.