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The 2004 impact
factor for Nature Neuroscience is 16.98,
according to the ISI Journal Citation Reports.
This places Nature Neuroscience third of 198
neuroscience journals, and first among primary research
journals in this field for the fourth consecutive year.
The use-and misuse-of impact factors was discussed in
Nature Neuroscience editorials in 1998 and 2003.
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Glial ATP
increases postsynaptic efficacy
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In rat
hypothalamic slices, norepinephrine increases ATP
release from astrocytes, causing a lasting increase in
postsynaptic responses in neuroendocrine cells. These
results show that glial ATP can contribute to the long
term regulation of synaptic strength.
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ADVANCE ONLINE PUBLICATION |
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Social
cognition in Williams syndrome
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Williams
syndrome is a genetic disorder that causes
hypersociability and increased non-social anxiety. A
functional imaging study now finds greater amygdala
activation in this disorder for threatening scenes
compared to faces, along with abnormal prefrontal
activity.
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Synchronized signals in escape
behavior
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How
synchronized oscillatory activity contributes to
perception remains unclear. In frogs, a looming object
triggers an escape response and evokes oscillations
among one class of retinal ganglion cells.
Pharmacological manipulations of this synchronous
activity suggest a strong correlation with escape
behavior.
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FOCUS |
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N400
reflects anticipatory language comprehension
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The N400 ERP
component is larger for unexpected words, but it is not
clear if this reflects anticipatory or integrative
processes. A new study finds that the N400 amplitude
correlates with the expectancy of penultimate articles
(a/an), indicating that subjects actively anticipate
upcoming words.
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Food intake and
body weight are subject to complex regulation by the
hypothalamus and other brain centers. Nature
Neuroscience presents six commissioned articles
highlighting current progress in the neurobiology of
feeding regulation, energy metabolism and obesity. This
focus is sponsored by the Obesity Research Task Force of
the National Institutes of Health, and is freely
accessible through
July.
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