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Article
The Arf6 activator Efa6/PSD3 confers regional specificity and modulates ethanol consumption in Drosophila and humans
Ubiquitously expressed genes have been implicated in a variety of specific behaviors, including responses to ethanol. However, the mechanisms that confer this behavioral specificity have remained elusive. Prev...
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Article
Open AccessDisentangling the autism−anxiety overlap: fMRI of reward processing in a community-based longitudinal study
Up to 40% of youth with autism spectrum disorder (ASD) also suffer from anxiety, and this comorbidity is linked with significant functional impairment. However, the mechanisms of this overlap are poorly unders...
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Article
Genomic architecture of human neuroanatomical diversity
Human brain anatomy is strikingly diverse and highly inheritable: genetic factors may explain up to 80% of its variability. Prior studies have tried to detect genetic variants with a large effect on neuroanato...
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Article
Open AccessWhite-matter microstructure and gray-matter volumes in adolescents with subthreshold bipolar symptoms
Abnormalities in white-matter (WM) microstructure, as lower fractional anisotropy (FA), have been reported in adolescent-onset bipolar disorder and in youth at familial risk for bipolarity. We sought to determ...
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Article
Genetic Risk For Nicotine Dependence in the Cholinergic System and Activation of the Brain Reward System in Healthy Adolescents
Genetic variation in a genomic region on chromosome 15q25.1, which encodes the alpha5, alpha3, and beta4 subunits of the cholinergic nicotinic receptor genes, confers risk to smoking and nicotine dependence (N...
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Article
Cortical thickness of superior frontal cortex predicts impulsiveness and perceptual reasoning in adolescence
Impulsiveness is a pivotal personality trait representing a core domain in all major personality inventories. Recently, impulsiveness has been identified as an important modulator of cognitive processing, part...
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Article
Open AccessThe neural basis of video gaming
Video game playing is a frequent recreational activity. Previous studies have reported an involvement of dopamine-related ventral striatum. However, structural brain correlates of video game playing have not b...
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Article
β-NMR in II–VI semiconductors
β-active probe nuclei are implanted in nominally undoped ZnSe crystals. β-radiation detected nuclear magnetic resonance (β-NMR) studies are described for two different probe nuclei, 8Li and 12B. This way, the imp...
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Article
Implanted light dopants in ZnSe
Spin polarized radioactive 12B, 12N, and 8Li probe nuclei are implanted in nominally undoped ZnSe at stationary concentrations ≤ 1010 cm-3. These light dopants, one donor and two acceptors, are characterized by β...
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Article
Interstitial related defect of12B implanted into n- and p-type silicon
β-radiation detected nuclear magnetic resonance (β-NMR) measurements of12B occupying sites with noncubic surroundings after implantation into Si have been extended from p-type to moderately doped n-type material....
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Article
β-radiation detected nuclear magnetic resonance studies of point defects in semiconductors
An introduction to the principles of the β-NMR method is presented and its potential in the field of defect research in semiconductors is discussed. This is followed by a review of experimental applications to...
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Article
Lattice locations and electric field gradients of boron implanted into vanadium
Polarised β emitting12B nuclei were recoil implanted into single crystalline vanadium atT=305 K. β radiation detected nuclear magnetic resonance measurements showed that two implanation sites occur simultaneously...
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Article
Electronic and diffusion-induced spin-lattice relaxation and the lattice expansion about interstitial12B in Al
The spin-lattice relaxation of12B in single-crystal aluminum was measured by β NMR in the temperature range 290 to 700 K. The total relaxation rate was separated into two well understood contributions caused by t...
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Article
Cross relaxation of β active nuclei: Principles and applications to12B in fcc metals
The cross-relaxation technique was used to determine the implantation sites of12B in Al and Cu crystals. From the temperature dependence of the cross-relaxation spectra information on the diffusion of the probes ...
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Article
NMR and cross relaxation of substitutional and interstitial12B in vanadium
Cross-relaxation resonances of the polarization of12B nuclei in single-crystal Vanadium were observed at various values of the external B field. From the comparison with calculated relaxation spectra the electric...
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Article
Implantation site of boron in heavily doped silicon: A β-NMR study
Using β-NMR with12B as nuclear probes the temperature dependence of the lattice-site occupation of boron implanted into heavily doped silicon is studied. In p-type material the unperturbed substitutional fraction...
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Article
Cross relaxation of12B in single-crystal aluminium
The dipole-dipole interaction of extremely diluted probe nuclei with their surrounding host nuclei gives rise to mutual flip-flop processes of the nuclear spins. As energy has to be conserved in this so-called...
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Article
Cross relaxation studied by β NMR
The dipole-dipole interaction between polarized β active probes implanted into a metal and the surrounding host nuclei may lead to a transfer of polarization from the probe to the host. As energy must be conse...
