IS THE ROSTROCAUDAL AXIS OF THE FRONTAL LOBE HIERARCHICAL PDF

However, their functional organization remains controversial. Recent studies have reported rostro-caudal distinctions in frontal cortex activity based on the abstractness of action representations. In addition, some have proposed that these differences reflect a hierarchical organization, whereby anterior frontal regions influence processing by posterior frontal regions during the realization of abstract action goals as motor acts. However, few have considered whether the anatomy and physiology of the frontal lobes support such a scheme.

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However, their functional organization remains controversial. Recent studies have reported rostro-caudal distinctions in frontal cortex activity based on the abstractness of action representations.

In addition, some have proposed that these differences reflect a hierarchical organization, whereby anterior frontal regions influence processing by posterior frontal regions during the realization of abstract action goals as motor acts. However, few have considered whether the anatomy and physiology of the frontal lobes support such a scheme. To address this gap, this Review surveys anatomical, neuroimaging, electrophysiological and developmental findings, and considers the question: could the organization of the frontal cortex be hierarchical?

Defining the functional organization of the frontal lobes remains a significant challenge for cognitive neuroscience. The frontal cortex FIG. Moreover, it is commonly assumed that spatially distinct portions of the prefrontal cortex PFC support qualitatively distinct cognitive control functions 9 — However, despite the frontal cortex having been the focus of a considerable amount of research, it has not been easy to distinguish separate frontal regions in terms of their functional properties.

Although neuropsychological studies of patients with frontal lobe lesions have demonstrated large-scale distinctions in function between each hemisphere, and between lateral and medial PFC 12 , they have revealed few examples of double dissociations for tasks or cognitive functions 5 but see REF.

Moreover, many neuroimaging studies report frontal activation across a diverse range of tasks and paradigms Likewise, single-unit recording experiments have revealed that frontal neurons are highly flexible, capable of changing their tuning properties as task demands change

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Is the rostro-caudal axis of the frontal lobe hierarchical?

Arabei From This Paper Figures, tables, and topics from this paper. Executive functions and the frontal lobes: Recent cognitive neuroscience research has suggested that cognitive control processing in the frontal lobes of the brain may be hierarchically organized along their rostrocaudal axis in order to deal with this problem. Curr Direct Psychol Sci. This is also the first study to directly demonstrate rostral-to-caudal dependencies in processing, a necessary component of hierarchy in the frontal cortex. Monkeys learnt to respond depending on whether a presented stimulus did or did not match a target stimulus. Showing of 12 ffrontal citations. Moreover, some researchers have suggested that frontal regions along the rostro-caudal axis interact with one another hierarchically ; they propose that there is a dominance relationship whereby higher, more-anterior regions influence processing in thr, more-posterior regions to a greater extent than vice versa.

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IS THE ROSTROCAUDAL AXIS OF THE FRONTAL LOBE HIERARCHICAL PDF

Friederici Trends in cognitive sciences The neural basis of the central executive system of working memory. Categorical representation of visual stimuli in the primate prefrontal cortex. Hence, although having a structurally arrayed hierarchical organization is not a requirement for the control of complex sequential behaviourwhen such an architecture exists, the same action can be represented at different levels of abstraction. The role of frontopolar cortex in subgoal processing during working memory. Task-specific neural activity in the si prefrontal cortex. Christoff K, et al.

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