Tuning curve sharpening for orientation selectivity: coding efficiency and the impact of correlations.

Orientation selectivity (OS) of visual cortical neurons is progressively sharpened during development. However, synaptic circuit mechanisms underlying the OS sharpening remain unclear. In the current study, in vivo whole-cell voltage-clamp…

Orientation selectivity is the most striking feature of simple cell coding in V1 that has been shown to emerge from the reduction of higher-order correlations in natural images in a large variety of statistical image models. The most parsimonious…

The codes obtained from the responses of large populations of neurons are known as population codes. Several studies have shown that the amount of information conveyed by such codes, and the format of this information, is highly dependent on the…

Common measures for the tuning of cells that are used in the neuroscience literature break down even in the case of moderately noisy neurons. For this reason, a considerable proportion of recorded neuronal data remains unconsidered. One reason for…

Ohshiro, Hussain, and Weliky 2011 recently showed that ferrets reared with exposure to flickering spot stimuli, in the absence of oriented visual experience, develop oriented receptive fields. They interpreted this as refutation of efficient coding…

Rank Order Coding is an alternative to conventional rate coding schemes that uses the order in which a neuron's inputs fire to encode information. In a visual system framework, we simulated the asynchronous waves of retinal spikes produced in…

Rank Order Coding is an alternative to conventional rate coding schemes that uses the order in which a neuron's inputs fire to encode information. In a visual system framework, we simulated the asynchronous waves of retinal spikes produced in…

We address focal questions about the growth of ``third-party'' government and new forms or tools of governance and the extent and impact of their increasing use to implement public policy and the ``Public will.'' Our goal is to sharpen this…

Drawing from both the IS and economics perspectives, the present study shows that the quality management of IT matters to firm performance. It is the first attempt to evaluate firm efficiency by incorporating the effect of IT capability using a…

Efficiency in today's world has become paramount in the quest to reduce our environmental impact on our planet. The focus on energy efficiency though can draw the attention away from other factors such as facility reliability. Efficiency…