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Volume 10 Issue 5, May 2009

Volume 10 Issue 5

From The Editors

Research Highlight

In Brief

Research Highlight

Review Article

  • Review Article |

    Microtubules are key determinants of neuronal polarity, which provides the basis of unidirectional signal transmission in the mature nervous system. This Review focuses on the regulation of microtubule assembly, organization and dynamics in developing axons and dendrites.

    • Cecilia Conde
    • Alfredo Cáceres
  • Review Article |

    Everyday object manipulation tasks require the brain to interpret the signals from tactile afferents in the hands. Johansson and Flanagan describe our current understanding of this process, showing how tactile signals are used to control and refine manipulations.

    • Roland S. Johansson
    • J. Randall Flanagan
  • Review Article |

    To integrate our visual environment into a unified and coherent perceptual experience, the brain uses multiple processing strategies. Here, Nassi and Callaway review how the primate primary visual cortex integrates parallel inputs and constructs new, parallel outputs to achieve this goal.

    • Jonathan J. Nassi
    • Edward M. Callaway

Opinion

  • Opinion |

    Two neurons can be connected by multiple synaptic contacts with different likelihoods of neurotransmitter release. Branco and staras discuss the role of feedback regulation from the postsynaptic site in determining this probability at individual synapses and consider the possible functional advantages of variable neurotransmitter release.

    • Tiago Branco
    • Kevin Staras
  • Opinion |

    Understanding the mode of cortical cholinergic neurotransmission, which is thought to mediate attentional tasks, is key to finding effective treatments for a range of cognitive disorders. Sarter and colleagues contrast evidence for volume and phasic transmission and conclude that the latter is more significant for attentional tasks.

    • Martin Sarter
    • Vinay Parikh
    • W. Matthew Howe

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