Transcranial magnetic stimulation TMS therapy uses targeted magnetic pulses to stimulate specific areas of the brain. Because every brain is slightly different, identifying an appropriate treatment target is an important part of the process. TMS mapping helps clinicians locate treatment areas and establish settings that are appropriate for the individual, supporting a more personalized approach to therapy.
TMS mapping is a process used to identify specific areas of the brain that can be targeted during stimulation. Rather than relying only on general measurements, mapping can help the treatment team determine where stimulation should be delivered and how the coil should be positioned.
With navigated TMS systems, brain anatomy and coil position can be tracked to improve targeting consistency. Research on neuronavigated TMS shows that combining navigation with individual brain anatomy can reduce targeting errors caused by differences in brain structure and variations in coil placement.
This makes mapping an important component of individualized TMS treatment.
The mapping process begins with positioning the patient and identifying the appropriate area for stimulation. Depending on the treatment system and protocol, clinicians may use anatomical landmarks, imaging information, or navigation technology to guide the process.
The treatment team also determines an individual’s motor threshold, which refers to the minimum stimulation intensity needed to produce a measurable motor response. This measurement can help establish an appropriate stimulation level for treatment.
Once the relevant information has been established, the clinician can use it to guide subsequent TMS sessions.
Brain anatomy varies from person to person. The same measurement taken from the outside of the head may not correspond to exactly the same brain location in every individual.
Navigation and mapping techniques can account for some of these anatomical differences, helping the clinician repeatedly position the coil over the intended treatment area.
One of the main purposes of mapping is to individualize treatment. TMS therapy is not simply about placing a coil on the head and delivering magnetic pulses. The treatment area, stimulation intensity, and positioning all need to be considered.
Mapping can provide information that helps clinicians establish these parameters based on the patient’s anatomy and response. During treatment, maintaining consistent coil positioning can also help ensure that stimulation is delivered as intended.
However, personalization does not mean that mapping guarantees better results for every patient. Research continues to evaluate which targeting and navigation approaches produce the greatest clinical benefits.
Once the treatment target and appropriate settings have been established, the patient can begin the planned course of TMS sessions. TMS is performed while the patient remains awake, and treatment does not require surgery or general anesthesia.
Sessions are repeated according to the prescribed treatment protocol. The treatment team can monitor the patient’s response and discuss any changes in symptoms or treatment experience throughout the process.
Because TMS is delivered as a course of treatment rather than a single session, consistent positioning and appropriate treatment parameters are important parts of ongoing care.
TMS may be considered for eligible individuals with conditions for which the treatment has been appropriately cleared or supported by clinical evidence. For example, TMS is an established treatment option for certain people with major depressive disorder, and specific TMS systems have also been cleared for OCD.
Whether TMS is appropriate depends on factors such as your symptoms, medical history, previous treatments, and treatment goals. A comprehensive evaluation is therefore an important first step.
Our Team can explain how mapping fits into your treatment plan and what to expect during the process. At Scottsdale TMS & Spravato, care is designed around individual needs, with careful assessment and monitoring throughout TMS treatment.
TMS mapping helps make brain stimulation more individualized by identifying appropriate treatment areas, determining stimulation parameters, and supporting consistent coil positioning. While mapping can improve the precision of TMS delivery, it is only one part of a comprehensive treatment plan. Careful evaluation, appropriate targeting, and ongoing monitoring all contribute to responsible TMS therapy. Scottsdale TMS & Spravato provides personalized TMS care focused on delivering treatment thoughtfully and supporting each patient’s goals throughout the process.
Dr. Vines has practiced psychiatry in Arizona for for over 25 years and has experience working with diverse populations that include children, adolescents, adults, geriatrics, SMI patients, and the chemically dependent.
August 14, 2026
