title: Human fronto-parietal and parieto-hippocampal pathways represent behavioral priorities in multiple spatial reference frames.
abstract: We represent behaviorally relevant information in different spatial reference frames in order to interact effectively with our environment. For example, we need an egocentric (e.g., body-centered) reference frame to specify limb movements and an allocentric (e.g., world-centered) reference frame to navigate from one location to another. Posterior parietal cortex (PPC) is vital for performing transformations between these different coordinate systems. Here, we review evidence for multiple pathways in the human brain, from PPC to motor, premotor, and supplementary motor areas, as well as to structures in the medial temporal lobe. These connections are important for transformations between egocentric reference frames to facilitate sensory-guided action, or from egocentric to allocentric reference frames to facilitate spatial navigation.
authors: Helen Wills Neuroscience Institute; University of California; Berkeley, Berkeley, CA USA.
authors: Sara M
authors: SM
authors: Szczepanski
authors: Department of Psychology, University of Wisconsin-Madison; Madison, WI USA.
authors: Yuri B
authors: YB
authors: Saalmann
mesh_terms: D001288:Attention / Q000502:physiology*; D005260:Female; D005625:Frontal Lobe / Q000502:physiology*; D006801:Humans; D008297:Male; D009415:Nerve Net / Q000502:physiology*; D010296:Parietal Lobe / Q000502:physiology*
keywords: connectivity; coordinate transformation; frontal cortex; grasp; navigation; parietal cortex; reach; saccade; spatial attention