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982 Newest Publications in proceedings of the national academy of sciences current issue

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Place cells in the hippocampus: Eleven maps for eleven rooms [Neuroscience]

30-Dec-2014 | Charlotte B. Alme; Chenglin Miao; Karel Jezek; Alessandro Treves; Edvard I. Moser; May-Britt Moser, Proceedings of the National Academy of Sciences current issue, 2014

The contribution of hippocampal circuits to high-capacity episodic memory is often attributed to the large number of orthogonal activity patterns that may be stored in these networks. Evidence for high-capacity storage in the hippocampus is missing, however. When animals are tested in pairs of ...

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STAT3 promotes survival of mutant photoreceptors in inherited photoreceptor degeneration models [Neuroscience]

30-Dec-2014 | Ke Jiang; Katherine L. Wright; Ping Zhu; Michael J. Szego; Alexa N. Bramall; William W. Hauswirth; Qiuhong Li; Sean ..., Proceedings of the National Academy of Sciences current issue, 2014

Inherited photoreceptor degenerations (IPDs), a group of incurable progressive blinding diseases, are caused by mutations in more than 200 genes, but little is known about the molecular pathogenesis of photoreceptor (PR) death. Increased retinal expression of STAT3 has been observed in response ...

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Cellular resolution optical access to brain regions in fissures: Imaging medial prefrontal cortex and grid cells in entorhinal cortex [Neuroscience]

30-Dec-2014 | Ryan J. Low; Yi Gu; David W. Tank, Proceedings of the National Academy of Sciences current issue, 2014

In vivo two-photon microscopy provides the foundation for an array of powerful techniques for optically measuring and perturbing neural circuits. However, challenging tissue properties and geometry have prevented high-resolution optical access to regions situated within deep fissures. These ...

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Large-scale topology and the default mode network in the mouse connectome [Neuroscience]

30-Dec-2014 | James M. Stafford; Benjamin R. Jarrett; Oscar Miranda-Dominguez; Brian D. Mills; Nicholas Cain; Stefan Mihalas; Gare ..., Proceedings of the National Academy of Sciences current issue, 2014

Noninvasive functional imaging holds great promise for serving as a translational bridge between human and animal models of various neurological and psychiatric disorders. However, despite a depth of knowledge of the cellular and molecular underpinnings of atypical processes in mouse models, ...

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Identification of a pheromone that increases anxiety in rats [Neuroscience]

30-Dec-2014 | Hideaki Inagaki; Yasushi Kiyokawa; Shigeyuki Tamogami; Hidenori Watanabe; Yukari Takeuchi; Yuji Mori, Proceedings of the National Academy of Sciences current issue, 2014

Chemical communication plays an important role in the social lives of various mammalian species. Some of these chemicals are called pheromones. Rats release a specific odor into the air when stressed. This stress-related odor increases the anxiety levels of other rats; therefore, it is possible ...

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Glutamatergic regulation prevents hippocampal-dependent age-related cognitive decline through dendritic spine clustering [Neuroscience]

30-Dec-2014 | Ana C. Pereira; Hilary K. Lambert; Yael S. Grossman; Dani Dumitriu; Rachel Waldman; Sophia K. Jannetty; Katina Calak ..., Proceedings of the National Academy of Sciences current issue, 2014

The dementia of Alzheimer’s disease (AD) results primarily from degeneration of neurons that furnish glutamatergic corticocortical connections that subserve cognition. Although neuron death is minimal in the absence of AD, age-related cognitive decline does occur in animals as well as humans, and ...

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Cortical plasticity induced by transplantation of embryonic somatostatin or parvalbumin interneurons [Neuroscience]

23-Dec-2014 | Yunshuo Tang; Michael P. Stryker; Arturo Alvarez-Buylla; Juan Sebastian Espinosa, Proceedings of the National Academy of Sciences current issue, 2014

GABAergic inhibition has been shown to play an important role in the opening of critical periods of brain plasticity. We recently have shown that transplantation of GABAergic precursors from the embryonic medial ganglionic eminence (MGE), the source of neocortical parvalbumin- (PV+) and ...

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Dopamine-associated cached values are not sufficient as the basis for action selection [Neuroscience]

23-Dec-2014 | Nick G. Hollon; Monica M. Arnold; Jerylin O. Gan; Mark E. Walton; Paul E. M. Phillips, Proceedings of the National Academy of Sciences current issue, 2014

Phasic dopamine transmission is posited to act as a critical teaching signal that updates the stored (or “cached”) values assigned to reward-predictive stimuli and actions. It is widely hypothesized that these cached values determine the selection among multiple courses of action, a premise that ...

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Cerebral coherence between communicators marks the emergence of meaning [Neuroscience]

23-Dec-2014 | Arjen Stolk; Matthijs L. Noordzij; Lennart Verhagen; Inge Volman; Jan-Mathijs Schoffelen; Robert Oostenveld; Peter H ..., Proceedings of the National Academy of Sciences current issue, 2014

How can we understand each other during communicative interactions? An influential suggestion holds that communicators are primed by each other’s behaviors, with associative mechanisms automatically coordinating the production of communicative signals and the comprehension of their meanings. An ...

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Context-dependent incremental timing cells in the primate hippocampus [Neuroscience]

23-Dec-2014 | John J. Sakon; Yuji Naya; Sylvia Wirth; Wendy A. Suzuki, Proceedings of the National Academy of Sciences current issue, 2014

We examined timing-related signals in primate hippocampal cells as animals performed an object-place (OP) associative learning task. We found hippocampal cells with firing rates that incrementally increased or decreased across the memory delay interval of the task, which we refer to as ...

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