require some form of movement of subjects to respond to the location of the target stimulus. This type of localization task is especially used to test the feature mismatch hypothesis as it provides evidence for negative priming during the mismatch of the location and target stimuli. RSI effects Response–stimulus interval (RSI) is another form of data that is used to quantify negative priming. RSI is the time difference between the response to prime target and the onset of probe trial. Negative priming effects are observed for delays of 20 millisecond to 8000 millisecond between the prime trial and the probe trial. Several experiments found that negative priming decays rapidly during this delay between prime and probe trials. Many studies have tried to find a rate of this decay but have not been successful. Researchers of both the distractor inhibition model and episode retrieval model use varying results of the RSI effects to justify the decay as a part of their model. More globally accepted research is needed to determine concrete RSI data and establish short-term and long-term negative priming limits. Neuroanatomy and imaging Neurological evidence of negative priming effects is being researched to help understand the physiological aspects and to develop more accurate models. The most common method to find such neurological evidence is by neuroimaging the brain using fMRI while subjects go through experiments of tasks that prompt negative priming effects. The two primary bases for neurological evidence are the internal representations of stimuli and memory retrieval. Most significantly activated regions of the brain are the left temporal lobe, inferior parietal lobe, and the prefrontal cortex of the frontal lobe. Evidence for internal representations are found in the left anterior temporal cortex, which has been associated with abstract semantic knowledge representations. The left anterolateral temporal cortex was found to be directly related to the magnitude of negative priming effect. The inferior parietal lobe is connected to the shifts in attention that occurs when attending to the distractors and the target. The inferior parietal cortex activated whenever attention shifted from the distractor to target stimulus or vice versa. Another significant area of activation was found in the prefrontal cortex. The superior, inferior, and medial frontal gyri, and the medial prefrontal cortex exhibited activation during the negative priming tasks. Activations in the frontal lobe has been associated with inhibitory network and selective attention. Similarly, evidences for semantic representations and temporal lobe