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A Rate-Independent Measure of Irregularity for Event Series and It's Application to Neural Spiking Activity
(IEEE, 2008)
Although higher-order statistics of neuronal firing have been characterized in neuroscience, many analyses ignore the nonstationarity of the background firing rate. We discuss how to measure the irregularity of interspike ...
A High-Throughput Screening Approach to Discovering Good Forms of Biologically Inspired Visual Representation
(Public Library of Science, 2009)
While many models of biological object recognition share a common set of “broad-stroke” properties, the performance of any one model depends strongly on the choice of parameters in a particular instantiation of that ...
Accurate Path Integration in Continuous Attractor Network Models of Grid Cells
(Public Library of Science, 2009)
Grid cells in the rat entorhinal cortex display strikingly regular firing
responses to the animal's position in 2-D space and have been
hypothesized to form the neural substrate for dead-reckoning. However, errors
...
Why is Real-World Visual Object Recognition Hard?
(Public Library of Science, 2008)
Progress in understanding the brain mechanisms underlying vision requires the construction of computational models that not only emulate the brain's anatomy and physiology, but ultimately match its performance on visual ...
Time-Warp–Invariant Neuronal Processing
(Public Library of Science, 2009)
Fluctuations in the temporal durations of sensory signals constitute a major source of variability within natural stimulus ensembles. The neuronal mechanisms through which sensory systems can stabilize perception against ...
Distinct Cerebral Pathways for Object Identity and Number in Human Infants
(Public Library of Science, 2008)
All humans, regardless of their culture and education, possess an intuitive understanding of number. Behavioural evidence suggests that numerical competence may be present early on in infancy. Here, we present brain-imaging ...
Retinal Ganglion Cells Can Rapidly Change Polarity from Off to On
(Public Library of Science, 2007)
Retinal ganglion cells are commonly classified as On-center or Off-center depending on whether they are excited predominantly by brightening or dimming within the receptive field. Here we report that many ganglion cells ...
A Neural Computation for Visual Acuity in the Presence of Eye Movements
(Public Library of Science, 2007)
Humans can distinguish visual stimuli that differ by features the size of only a few photoreceptors. This is possible despite the incessant image motion due to fixational eye movements, which can be many times larger than ...
Onset Rivalry: Brief Presentation Isolates an Early Independent Phase of Perceptual Competition
(Public Library of Science, 2007)
When the left and right eyes are simultaneously presented with different images, observers typically report exclusive awareness of only one image. This phenomenon is termed binocular rivalry, reflecting the fact that the ...
Interacting Adaptive Processes with Different Timescales Underlie Short-Term Motor Learning
(Public Library of Science, 2006)
Multiple processes may contribute to motor skill acquisition, but it is thought that many of these processes require sleep or the passage of long periods of time ranging from several hours to many days or weeks. Here we ...