Retrieval performance with “pattern separation” in the sensory system.
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Abstract
<p>A: Example of the manipulated input patterns. Top: same pattern as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0198406#pone.0198406.g001" target="_blank">Fig 1B</a>, but with 5% pixels flipped (300 × 300 pixels); Bottom: the scaled version. B: Retrieval error as a function of the fraction of randomly flipped pixels in the input image (<i>σ</i><sub><i>n</i></sub> = 0.2, 200 stored sequences). Dashed curve: retrieval performance of the model with neurogenesis (<i>σ</i><sub><i>a</i></sub> = 1) for comparison. C: With the same amount of noise in the input (1% flipped pixels), retrieval error increases monotonically with increasing retrieval noise <i>σ</i><sub><i>n</i></sub>. D: The difference between the retrieval error for original patterns and that for noisy input pattern gradually increases with input noise (<i>σ</i><sub><i>n</i></sub> = 0.2). Values in C and D are drawn from the 30<sup>th</sup> element in the sequence.</p
