Affiliation:
1. Functional MRI Center, Beilinson Hospital Rabin Medical Center Petach Tikva Israel
2. Imaging Department, Beilinson Hospital Rabin Medical Center Petach Tikva Israel
3. Sackler Faculty of Medicine Tel Aviv University Tel Aviv Israel
4. Cognitive Neurology Clinic, Beilinson Hospital Rabin Medical Center Petach Tikva Israel
5. Department of Neurology, Beilinson Hospital Rabin Medical Center Petach Tikva Israel
6. Sagol School of Neuroscience Tel Aviv University Tel Aviv Israel
Abstract
AbstractHumans are goal‐directed; however, goal‐unrelated information still affects us, but how? The Stroop task is often used to answer this question, relying on conflict (incongruency) between attributes, one targeted by the task and another irrelevant to the task. The frontal regions of the brain are known to play a crucial role in processing such conflict, as they show increased activity when we encounter incongruent stimuli. Notably, the Stroop stimuli also consist of conceptual dimensions, such as semantic or emotional content, that are independent of the attributes that define the conflict. Since the non‐targeted attribute usually refers to the same conceptual dimension as the targeted‐attribute, it is relevant to the task at hand. For example, when naming the emotion of an emotional face superimposed by an emotional word, both the targeted‐attribute and the non‐targeted attribute refer to the conceptual dimension “emotion”. We designed an fMRI paradigm to investigate how conflicts between different conceptual dimensions impact us. Even though the conflict was task‐irrelevant, incongruent stimuli resulted in longer reaction times, indicating a behavioral congruency effect. When examining the neural mechanisms that underlie this effect, we found that the frontal regions exhibited repetition suppression, while the bilateral intraparietal sulcus (IPS) showed a congruency effect linked to the behavioral effect. Taken together, these findings suggest that individuals are unable to completely ignore task‐irrelevant information, and that the IPS plays a crucial role in processing such information.
Subject
Neurology (clinical),Neurology,Radiology, Nuclear Medicine and imaging,Radiological and Ultrasound Technology,Anatomy
Cited by
1 articles.
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