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On the origin of Acochlidia and other enigmatic euthyneuran gastropods, with implications for the systematics of Heterobranchia
BackgroundA robust phylogenetic hypothesis of euthyneuran gastropods, as a basis to reconstructing their evolutionary history, is still hindered by several groups of aberrant, more or less worm-likeExpand
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Functional anatomy of GO/NO-GO discrimination and response selection — a PET study in man
The purpose of this study was to identify the functional fields activated in relation to the NO-GO decision. Nine healthy subjects participated in the study which consisted of two test positronExpand
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Accuracy of sonographic elastography in the differential diagnosis of enlarged cervical lymph nodes: comparison with conventional B-mode sonography.
OBJECTIVE The purpose of our study was to evaluate the diagnostic performance of sonographic elastography and B-mode sonography individually and combined in the differentiation of reactively andExpand
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Participation of the prefrontal cortices in prospective memory: evidence from a PET study in humans
Prospective memory is a memory feature in humans which involves activities for remembering to do something in the future. The present study provides functional neuroanatomy of prospective memory forExpand
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The human prefrontal and parietal association cortices are involved in NO-GO performances—an event-related fMRI study
One of the important roles of the prefrontal cortex is inhibition of movement. We applied an event-related functional magnetic resonance imaging (fMRI) technique to observe changes in fMRI signals ofExpand
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Age-related changes in human D1 dopamine receptors measured by positron emission tomography
The effects of age on the binding parameters of11C-SCH23390, the highly selective ligand for central D1 dopamine receptors, at specific binding sites in the brain were studied. Seventeen healthy maleExpand
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Regional cerebral blood flow changes of cortical motor areas and prefrontal areas in humans related to ipsilateral and contralateral hand movement
The regional cerebral blood flow (rCBF) was measured with positron emission tomography (PET) in ten normal right-handed volunteers with the purpose of comparing rCBF changes related to movements ofExpand
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Voxel-based morphometry of human brain with age and cerebrovascular risk factors
The objectives of this study were to evaluate the correlations of the volumes of the gray matter and white matter with age, and the correlations of the tissue probabilities of the gray matter andExpand
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A PET Study of Visuomotor Learning under Optical Rotation
We measured the regional cerebral blood flow (rCBF) in six healthy volunteers with PET (positron emission tomography) and H(15)(2)O to identify the areas of the human brain involved in sensorimotorExpand
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Age‐related changes in topological organization of structural brain networks in healthy individuals
The aim of this study was to examine structural brain networks using regional gray matter volume, as well as to investigate changes in small‐world and modular organization with normal aging. WeExpand
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