WOBIB: 1 - Law, et al. (1998) Parieto-occipital cortex ...
 
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Ian Law; Claus Svarer; Egill Rostrup; Olaf B. Paulson. Parieto-occipital cortex activation during self-generated eye movements in the dark. Brain 121 ( Pt 11):2189-200, 1998. PMID: 9827777. WOBIB: 1.

A number of extrastriate visual areas in the parieto-occipital cortex are known from single-cell recordings of the macaque monkey to be involved in the coding of eye-position signals in the brain. These are important for the accurate location of visual objects in extrapersonal space. It can be predicted that these areas will show increased activation during the performance of eye movements at high frequency. In the present study PET and measurements of the regional distribution of cerebral blood flow (rCBF) were used as indirect measures of neural activity. Two independent groups of normal volunteers performed large-amplitude self-generated eye movements in complete darkness, thus removing the confounding effects of visual stimulation on parieto-occipital activation. The first group (group A; n = 5) served as a hypothesis-generating group and the second group (group B; n = 4) served as a hypothesis-testing group. The data were analysed using statistical parametric mapping at a significance level corrected for multiple comparisons (group A, Z > 4.08; group B, Z > 4.04). Significant rCBF increases were found for both groups in the frontal eye fields, supplementary eye fields, cerebellar vermis and putamina/thalami. Additionally, activation was found in the cunei in the posterior bank of the parieto-occipital sulcus. Also, the extraocular muscles were activated and, as a consequence of the partial volume effect, projected to the orbitofrontal cortices. At a less conservative threshold, activation was found close to the intraparietal sulci on the left side (Z = 3.91, P = 0.09) and right side (Z = 3.33, P = 0.42). The locations of these areas were confirmed in group B with reference to high-resolution structural MRI scans. The activation of the parieto-occipital cortex without overt visual stimuli is interpreted as the result of neural activity related to the reception of efferent copies of motor commands and/or the activation of neurons coding for eye position relative to the orbits. These are important constituents for the location and remapping of visual stimuli in space.

Asymmetry: 0.20947 (left: -1, right: +1)

VRML2 file (79 Kb)

1 Self-generated saccades. Voluntary self-generated large-amplitude horizontal saccades with eyes open versus resting state with eyes closed. WOEXP: 1.


corner cube of WOBIB_1

Related - positive correlated volumes

+1: 1.00000 Ian Law; Claus Svarer; Egill Rostrup; Olaf B. Paulson. Parieto-occipital cortex activation during self-generated eye movements in the dark. Brain 121 ( Pt 11):2189-200, 1998. PMID: 9827777. WOBIB: 1.

+2: 0.50129 L. M. Parsons; D. Osherson. New Evidence for Distinct Right and Left Brain Systems for Deductive versus Probabilistic Reasoning. Cerebral Cortex 11(10):954-65, 2001. PMID: 11549618. WOBIB: 47.

+3: 0.50108 S. Nour; Claus Svarer; J. K. Kristensen; O. B. Paulson; I. Law. Cerebral activation during micturition in normal men. Brain 123 ( Pt 4):781-9, 2000. PMID: 10734009. WOBIB: 17.

+4: 0.48763 P. E. Paulson; S. Minoshima; T. J. Morrow; K. L. Casey. Gender differences in pain perception and patterns of cerebral activation during noxious heat stimulation in humans. Pain 76(1-2):223-9, 1998. PMID: 9696477. WOBIB: 118.

+5: 0.48500 Ian Law; Claus Svarer; Sĝren Holm; Olaf B. Paulson. The activation pattern in normal humans during suppression, imagination and performance of saccadic eye movements. Acta Physiologica Scandinavica 161(3):419-434, 1997. PMID: 9401596. FMRIDCID: . WOBIB: 135.

+6: 0.46833 J. M. Ellermann; J. D. Siegal; J. P. Strupp; T. J. Ebner; K. Ugurbil. Activation of visuomotor systems during visually guided movements: a functional MRI study. Journal of Magnetic Resonance 131(2):272-285, 1998. PMID: 9571103. WOBIB: 45.

+7: 0.43657 B. J. Casey; Jonathan D. Cohen; K. O'Craven; Richard J. Davidson; W. Irwin; C. A. Nelson; D. C. Noll; X. Hu; M. J. Lowe; B. R. Rosen; C. L. Truwitt; P. A. Turski. Reproducibility of fMRI results across four institutions using a spatial working memory task. NeuroImage 8(3):249-261, 1998. PMID: 9758739. FMRIDCID: . WOBIB: 116.

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+10: 0.42415 K. L. Casey; T. J. Morrow; J. Lorenz; S. Minoshima. Temporal and spatial dynamics of human forebrain activity during heat pain: analysis by positron emission tomography. Journal of Neurophysiology 85(2):951-9, 2001. PMID: 11160525. WOBIB: 95.

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+19: 0.36715 Richard D. Lane; Eric M. Reiman; Geoffrey L. Ahern; Gary E. Schwartz; Richard J. Davidson. Neuroanatomical Correlates of Happiness, Sadness, and Disgust. The American Journal of Psychiatry 154(7):926-933, 1997. PMID: 9210742. FMRIDCID: . WOBIB: 177.

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+21: 0.36251 Russell A. Poldrack; John E. Desmond; Gary H. Glover; John D. E. Gabrieli. The neural basis of visual skill learning: an fMRI study of mirror reading. Cerebral Cortex 8(1):1-10, 1998. PMID: 9510380. WOBIB: 15.

+22: 0.35243 Greig I. de Zubicaray; Katie McMahon; Stephen J. Wilson; Santhi Muthiah. Brain activity during the encoding, retention, and retrieval of stimulus representations. Learning & Memory 8(5):243-251, 2001. PMID: 11584070. DOI: 10.1101/lm.40301. FMRIDCID: . WOBIB: 141.

+23: 0.34689 R. J. Maddock; A. S. Garrett; Michael H. Buonocore. Remembering familiar people: the posterior cingulate cortex and autobiographical memory retrieval. Neuroscience 104(3):667-76, 2001. PMID: 11440800. WOBIB: 90.

+24: 0.34030 Richard J. Maddock; Michael H. Buonocore; Shawn J. Kile; Amy S. Garrett. Brain regions showing increased activation by threat-related words in panic disorder. NeuroReport 14(3):325-328, 2003. PMID: 12634477. FMRIDCID: . WOBIB: 168.

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Antirelated - negatively correlated volumes

-1: 0.00010 J. D. Bremner; R. B. Innis; S. M. Southwick; L. Staib; S. Zoghbi; D. S. Charney. Decreased benzodiazepine receptor binding in prefrontal cortex in combat-related posttraumatic stress disorder. American Journal of Psychiatry 157(7):1120-1126, 2000. PMID: 10873921. WOBIB: 67.

-2: 0.00105 Dottie M. Clower; John M. Hoffman; John R. Votaw; Tracy L. Faber; Roger P. Woods; Garrett E. Alexander. Role of posterior parietal cortex in the recalibration of visually guided reaching. Nature 383(6601):618-21, 1996. PMID: 8857536. WOBIB: 109.

-3: 0.00860 Hans-Otto Karnath; Monika Fruhmann Berger; Wilhelm Kuker; Chris Rorden. The Anatomy of Spatial Neglect based on Voxelwise Statistical Analysis: A Study of 140 Patients. Cerebral Cortex 14(10):1164-1172, 2004. PMID: 15142954. DOI: 10.1093/cercor/bhh076. FMRIDCID: . WOBIB: 133.

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-5: 0.02017 F. Hyder; E. A. Phelps; C. J. Wiggins; K. S. Labar; A. M. Blamire; R. G. Shulman. "Willed action": a functional MRI study of the human prefrontal cortex during a sensorimotor task. Proc Natl Acad Sci U S A 94(13):6989-6994, 1997. PMID: 9192679. WOBIB: 6.

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