Download Connectionist Models of Behaviour and Cognition II: by Julien Mayor, Nicholas Ruh, Kim Plunkett PDF

By Julien Mayor, Nicholas Ruh, Kim Plunkett

The neural computational method of cognitive and mental tactics is comparatively new. notwithstanding, Neural Computation and Psychology Workshops (NCPW), first held sixteen years in the past, lie on the middle of this fast-moving self-discipline, due to its interdisciplinary nature - bringing jointly researchers from diverse disciplines comparable to synthetic intelligence, cognitive technology, machine technology, neurobiology, philosophy and psychology to debate their paintings on types of cognitive strategies. once more, the 11th Neural Computation and Psychology Workshop (NCPW11), held in 2008 on the college of Oxford (England), displays the interdisciplinary nature and wide selection of backgrounds of this box. This quantity is a suite of peer-reviewed contributions of lots of the papers awarded at NCPW11 by way of researchers from 4 continents and 15 international locations.

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Extra resources for Connectionist Models of Behaviour and Cognition II: Proceedings of the 11th Neural Computation and Psychology Workshop (Progress in Neural Processing)

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4. (a) Activation of PMC in a congruent trial. (b) Activation of PMC in an incongruent trial. The results also show faster RTs for the larger objects, as in real experiments. The reason is that large objects activate more neurons of V1 than small ones, and these activate a larger number of neurons in PC, and, in turn, in PMC. The signal arriving to PMC via the ventral pathway is also greater for large objects than for small ones due to the use of the modified Kohonen learning rule. Both phenomena tend to produce a faster “charge” of the leaky neurons of the PMC and hence faster RTs (see Eq.

A) Photo taken during the (b) Extracted finger posiexperiment. tions. (c) Mean finger positions. Fig. 3. Mean finger positions: Finger positions (b) are extracted from photos (a). For each finger its mean position is calculated (c). The thumb position is highlighted by a square box. 2. Simulations We conducted simulations with SAAM using the same objects as in the experiment. Figure 4 shows two examples of the simulation results. These illustrations also include the mean finger positions from the experimental results for a comparison with the simulation data.

These illustrations also include the mean finger positions from the experimental results for a comparison with the simulation data. The ellipses around the mean finger positions illustrate the variations in the data. The comparison shows that most finger positions lie within the ellipses. Hence the theoretical assumptions behind SAAM that geometrical and anatomical constraints are sufficient to mimic human behaviour have been confirmed. Note that not all experimental conditions could be simulated with SAAM, since the model is currently only able to create horizontal grasps.

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