The neuronal activity measured during a nuclear magnetic resonance tomographic examination follows a protocol which reproduces the temporal sequence of stimuli. During the correlation analysis, the sensitivity of known means to changes in the signal-response form decreases with each activation cycle. According to the invention, better evaluation results can be achieved in the correlation analysis by using a detrending method with a computer for evaluating the data from nuclear magnetic resonance tomographs. Said computer has evaluation means which use a constant number of n data values for correlation analysis according to the sliding window technique. As the data measurement progresses, the oldest value is continuously disposed of and the most recent data value drawn into the calculation.
COMPUTER FOR EVALUATING SIGNALS FROM NUCLEAR MAGNETIC RESONANCE TOMOGRAPHY, AND A NUCLEAR RESONANCE TOMOGRAPH EQUIPPED WITH SAID COMPUTER