Abstract: This disclosure relates to transcranial stimulation. In one arrangement, a method for obtaining personalized parameters for transcranial stimulation is provided. Baseline data about a test subject are received, the baseline data comprising information about the test subject acquired prior to transcranial stimulation applied to the test subject. A Gaussian process model of performance of one or more training subjects is used to obtain personalized parameters for transcranial stimulation for the test subject based on the received baseline data. The Gaussian process jointly models subject performance during and/or after transcranial stimulation as a function of both i) parameters defining the transcranial stimulation; and ii) baseline data for the one or more training subjects.

Abstract: The invention relates to an apparatus for improving and/or maintaining the numerical ability of a subject, by modulating the subjects brain activity. The apparatus can be used for rehabilitation and intervention of subjects having mathematical learning difficulties, such as math dyslexia, dyscalculia or acalculia, to maintain the numerical ability, or for enhancing the numerical abilities or proficiency in normal subjects. The invention also extends to methods for improving numerical abilities and/or maintaining numerical ability.