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Trends in Neurosciences

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  1. Dopaminergic basis of salience dysregulation in psychosis.

    Trends in Neurosciences 37(2):85 (2014) PMID 24388426

    Disrupted salience processing is proposed as central in linking dysregulated dopamine function with psychotic symptoms. Several strands of evidence are now converging in support of this model. Animal studies show that midbrain dopamine neurons are activated by unexpected salient events. In psychotic...
  2. Rhodopsin homeostasis and retinal degeneration: lessons from the fly.

    Trends in Neurosciences 36(11):652 (2013) PMID 24012059 PMCID PMC3955215

    Rhodopsins (Rh) are G protein-coupled receptors that function as light-sensors in photoreceptors. In humans, Rh mutations cause retinitis pigmentosa (RP), a degenerative disease that ultimately results in blindness. Studies in Drosophila have provided many insights into basic Rh biology and have ide...
  3. A de novo convergence of autism genetics and molecular neuroscience.

    Trends in Neurosciences 37(2):95 (2014) PMID 24387789

    We review recent studies and suggest that they have led to a convergence on three functional pathways: (i) chromatin remodeling; (ii) wnt signaling during development; and (iii) synaptic function. These pathways and genes significantly expand the neurobiological targets for study, and suggest a path...
  4. NMNATs, evolutionarily conserved neuronal maintenance factors.

    Trends in Neurosciences 36(11):632 (2013) PMID 23968695 PMCID PMC3857727

    We review evidence that NMNATs protect neurons through multiple mechanisms in different contexts, and highlight functions that either require or are independent of NMNAT catalytic activity. We then summarize data supporting a role for NMNATs in neuronal maintenance and raise intriguing questions on...
  5. Resting brains never rest: computational insights into potential cognitive architectures.

    Trends in Neurosciences 36(5):268 (2013) PMID 23561718

    Resting-state networks (RSNs), which have become a main focus in neuroimaging research, can be best simulated by large-scale cortical models in which networks teeter on the edge of instability. In this state, the functional networks are in a low firing stable state while they are continuously pulled...
  6. Harnessing plasticity to understand learning and treat disease.

    Trends in Neurosciences 35(12):715 (2012) PMID 23021980 PMCID PMC3508154

    I discuss a new perspective on neural plasticity and suggest how plasticity might be targeted to reset dysfunctional circuits. Specifically, a new model is proposed in which map expansion provides a form of replication with variation that supports a Darwinian mechanism to select the most behaviorall...
  7. TNFα in synaptic function: switching gears.

    Trends in Neurosciences 35(10):638 (2012) PMID 22749718

    We discuss the evidence in support of synaptic regulation by TNFα and the underlying cellular mechanisms, including control of AMPA receptor trafficking and glutamate release from astrocytes. These findings suggest that increases in TNFα levels (caused by nervous system infection, injury, or disease...
  8. Chemokine CXCL12 in neurodegenerative diseases: an SOS signal for stem cell-based repair.

    Trends in Neurosciences 35(10):619 (2012) PMID 22784557 PMCID PMC3461091

    The dynamic relation between stem cells and their niche governs self-renewal and progenitor cell deployment. The chemokine CXCL12 (C-X-C motif ligand 12) and its signaling receptor CXCR4 (C-X-C motif receptor 4) represent an important pathway that regulates homing and maintenance of stem cells in ne...
  9. Migraine: a disorder of brain excitatory-inhibitory balance?

    Trends in Neurosciences 35(8):507 (2012) PMID 22633369

    We review here our current understanding of these mechanisms, focusing on recent advances regarding migraine genetics, headache mechanisms, and the primary brain dysfunction(s) underlying migraine onset and susceptibility to cortical spreading depression, the neurophysiological correlate of migraine...
  10. Seeing the light: photobehavior in fruit fly larvae.

    Trends in Neurosciences 35(2):104 (2012) PMID 22222349

    Understanding how sensory stimuli drive behavior requires a detailed understanding of the molecular and neural nature through which the stimuli are received and processed. The visual system of the fruit fly Drosophila melanogaster shares marked similarities to that of mammals. Although much focus ha...