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It has long been appreciated that the posterior parietal cortex plays a role in the processing of saccadic eye movements. ... Unlike other cortical areas in the posterior parietal cortex, the lateral intraparietal area has strong anatomical connections to other saccade centers, and its cells have saccade-related responses that ... Electrical stimulation of monkey posterior parietal area produces saccadic eye movements [4, 5] , and lesions to monkey parietal cortex result in deficits in saccades [ 6, 7] . ...doi:10.1016/0959-4388(92)90143-9 pmid:1477549 fatcat:dsmxxztj6bezveuwxzenongfgy
Posterior parietal cortex (PPC) plays an important role in the planning and control of goal-directed action. ... of reach goals in posterior-medial PPC as opposed to reach movement vectors in more anterior-lateral PPC regions, and (2) their integration within a broader cortical framework for reach, grasp and eye-hand ... Fig. 1 1 Comparison of monkey and human parietal lobes. a Macaque monkey brain showing basic anatomy and putative specialization of visuomotor function in posterior parietal cortex for saccade, reach and ...doi:10.1007/s00221-012-3158-9 pmid:22777102 fatcat:jy2kslkhpjfqvlv3ts573bgi5m
The second part of the review will discuss the representation of space in the posterior parietal cortex. Encoding spatial locations is an essential step in sensory-motor transformations. ... Cells in the lateral intraparietal area, a subdivision of the parietal cortex, have activity related to eye movements the animal intends to make. ... Human patients with bilateral lesions to the posterior parietal cortex are unable to make willed saccades, although spontaneous saccades are unaffected (Balint, 1909) . ...doi:10.1093/cercor/5.5.457 pmid:8547792 fatcat:bdf5fikqkvb2rhw6tu6fkqpq4i
Irrespective of visual or tactile input, we found sustained activity in posterior partial cortex, frontal-eye field, and contralateral visual cortex when subjects would later make an eye movement. ... We conclude that the delay activations reflect translation of sensory signals into effector-specific motor circuits in parietal and frontal cortex (plus an impact on contralateral visual cortex for planned ... Saccadic eye movements resulted in selective activation of posterior parietal cortex and superior premotor regions. ...doi:10.1152/jn.00192.2007 pmid:17898151 fatcat:buwumahqpfgbvn7cjjr53pgky4
We review the known subregions of the human posterior parietal cortex and the principles behind their organization. ... , grasping and eye movements. ... We thank C Cavina-Pratesi, P Medendorp, M-T Perenin, G Kró liczak, and the editors of this volume for comments on an earlier draft of the manuscript. ...doi:10.1016/j.conb.2006.03.005 pmid:16563735 fatcat:pqsyvulkizf3bfyjnpk7envmve
This shows that this region within the human posterior parietal cortex codes the target location for an upcoming saccade, rather than the location of the remembered visual stimulus in an anti-saccade task ... Remapping the remembered target location for anti-saccades in human posterior parietal cortex. . ... Various brain regions have been implicated in this process, including prefrontal cortex, frontal eye fields, supplementary eye fields, posterior parietal cortex (PPC), primary visual cortex and superior ...doi:10.1152/jn.01331.2004 pmid:15788514 fatcat:znyvkp7razf53ly2ij5ex6dn2q
Journal of Cognitive Neuroscience
Similarly, trans- cranial magnetic stimulation of the posterior parietal cortex prior to the second saccade reduces its accuracy (Donkelaar & Muri, 2002), and a recent study of patients with parietal lesions ... In rhesus monkeys, neurons within the lateral bank of the intraparietal sulcus (area LIP) encode and “maintain” the remembered locations of saccadic tar- gets over time (Chafee & Goldman-Rakic, 1998; Mazzoni ...
Acknowledgements Our work is supported by National Institutes of Health grant EYI 1347-27 and ivlcDonncll Pew grant 90-lh. ... (b) Some of the neuronal pathways by which visual information entering the eye might guide movement of the eyes and limbs. Areas shown in black are in the posterior parietal lobe. ... Sparks DL: The neural encoding of the location of targets for saccadic eye movements. In Brain and Space. Edited by Paillard J. New York: Oxford University Press; 1991 :3-l 9. 30. ...doi:10.1016/s0959-4388(98)80140-2 pmid:9635202 fatcat:tgeaszox3zhiblsx5ptnpx3ccy
A new study has found that, when a macaque monkey chooses where to look, activity in parietal cortex reflects anticipated reward value, whether from fluid to drink or from social information such as dominance ... Several functions of the posterior parietal cortex are involved in such tasks. ... of parietal cortex function in human and non-human primates alike. ...doi:10.1016/j.cub.2008.02.059 pmid:18430635 fatcat:zo2wuc3pijcp7j23h7ec3f7gge
We identified multiple maps in both posterior parietal cortex and superior frontal cortex recruited for eye and hand movements, including maps not observed in previous mapping studies. ... A recent study from our laboratory demonstrated that parietal cortex contains a map of visual space related to saccades and spatial attention and identified this area as the likely human homologue of the ... The authors thank Anders Dale for helpful discussions on statistics. ...doi:10.1016/j.neuroimage.2007.01.033 pmid:17376706 pmcid:PMC2752728 fatcat:zs3tj5zasfdi3kgg6kckka3nvu
The Journal of Neuroscience
Scherberger H, Jarvis MR, Andersen RA (2005) Cortical local field potential encodes movement intentions in the posterior parietal cortex. Neuron 46:347-354. ... Scherberger H, Andersen RA (2001) Neural activity in the posterior parietal cortex during decision processes for generating visually-guided eye and arm movements in the monkey. ...
Journal of Anatomy
Bisley JW, Goldberg ME (2003a) The role of the parietal cortex in the neural processing of saccadic eye movements. Adv Neurol 93 , 141-157. ... The areas within the intraparietal sulcus (IPS), in particular, serve as interfaces between the perceptive and motor systems for controlling arm and eye movements in space. ... eye movements, for example reaching, grasping, fixation and rapid eye movements (saccades). ...doi:10.1111/j.1469-7580.2005.00426.x pmid:16011542 fatcat:lta4dzqsfncuzavy2xcu35s5we
This review examines the involvement of frontal and parietal areas in hand and arm movements in humans as revealed with functional neuroimaging. ... The degree of functional specialization, possible homologies with macaque cortical regions, and differences between frontal and posterior parietal areas are discussed, as well as a possible organization ... Acknowledgments The author thanks Jonathan D. Nelson and Jody C. Culham for feedback on an earlier version of this paper. J. Kalaska, P. Medendorp, and J. ...doi:10.1177/1073858410375468 pmid:20817917 fatcat:ldj4k7ioyzb7hc27pnxdui35pm
Single-unit recordings have identified a region in the posterior parietal cortex (PPC) of the monkey that represents and updates visual space in a gaze-centered frame. ... Here, using event-related functional magnetic resonance imaging, we identified an analogous bilateral region in the human PPC that shows contralateral topography for memory-guided eye movements and arm ... This suggests that the parietal area identified here encodes and updates the remembered location of the saccade and pointing goals in eye-fixed coordinates. ...doi:10.1523/jneurosci.23-15-06209.2003 pmid:12867504 fatcat:4ob5wpxhbjerpee24rodlmu3e4
Electrophysiological studies in monkeys have identified effector-related regions in the posterior parietal cortex (PPC). ... The lateral intraparietal area, for example, responds preferentially for saccades, whereas the parietal reach region responds preferentially for arm movements. ... Results To examine the encoding of saccade and reach movements in posterior parietal cortex, we first localized ROIs in eight subjects using topographic mapping as described previously (Sereno et al., ...doi:10.1523/jneurosci.0459-07.2007 pmid:17460081 pmcid:PMC1876670 fatcat:bf754unpbvddlpko24rb6t7cw4
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