 In doing so researchers have found that repetition suppression appears to occur on multiple processing levels; dependent on the stimuli being processed and the processing level at which the experimental manipulation is directed; with reductions in neural activity to repeated stimuli occurring in regions involved with the initial processing of those features.However, care must be taken in interpreting the results of these studies as the relationship between repetition suppression and repetition priming has not been definitively established.Although repetition priming is most often associated with neural attenuation for repeated presentation of stimuli, increases in neural responses have also been measured in a number of experimental contexts.