The present invention relates generally to a method and apparatus for determining one or more cumulative effects of an application of transcranial magnetic stimulation to the brain of a subject, as well as a method and apparatus of representing same. According to an aspect of certain embodiments of the invention there is provided a method for determining one or more cumulative effects of an application of transcranial stimulation to one or more locations in a brain of a subject comprising the steps of applying multiple transcranial magnetic stimulation pulses to the brain, determining a dose of each of said stimulation pulses, measuring a physical response of the user and determining or approximating an accumulation of said response of said brain for each of said one or more locations in the brain of said subject.
