A Computational Neuroscience Approach to Attention, Memory, and Decision – Making Gustavo Deco Institucio Catalana de Recerca i Estudis Avançats (ICREA), Universitat Pompeu Fabra, Passeig de Circumval.lacio, 8, 08003 Barcelona, Spain
Cognitive behaviour requires complex context-dependent processing of information that emerges from the links between attentional perceptual processes, working memory and reward-based evaluation of the performed actions. We describe a computational neuroscience theoretical framework which shows how an attentional state held in a short term memory in the prefrontal cortex can by top-down processing influence ventral and dorsal stream cortical areas using biased competition to account for many aspects of visual attention. We also show how within the prefrontal cortex an attentional bias can influence the mapping of sensory inputs to motor outputs, and thus play an important role in decision making. We also show how the absence of expected rewards can switch the attentional bias signal, and thus rapidly and flexibly alter cognitive performance. This theoretical framework incorporates spiking and synaptic dynamics which enable single neuron responses, fMRI activations, psychophysical results, the effects of pharmacological agents, and the effects of damage to parts of the system, to be explicitly simulated and predicted. This computational neuroscience framework provides an approach for integrating different levels of investigation of brain function, and for understanding the relations between them. The models also directly address how bottom-up and top-down processes interact in visual cognition, and show how some apparently serial processes reflect the operation of interacting parallel distributed systems.
B201 A Computational Intelligence Approach to Alleviate Complexity Issues in Design.pdf. B201 A Computational Intelligence Approach to Alleviate Complexity ...
The author is with the Department of Psychological and Brain Sciences, In- diana University, Bloomington, IN 47405 USA ... developmental program that is biologically grounded, highly. âopen-ended,â and stochastic. .... frames show 300 ms of activ
argue here that computational approaches can further our understanding of ..... These follow up simulations suggested a monotonically decreasing function,.
... apps below to open or edit this item. pdf-1866\the-computational-brain-computational-neurosc ... -by-patricia-smith-churchland-terrence-j-sejnowski.pdf.
to Music Information and New Interpretations of An. Aesthetic Fitness ..... 1), there might be a priming effect where the main theme was memorised by the ...
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. a computational ...
Jan 16, 2013 - 2.2.1 The Ring Z is noetherian . .... This material is based upon work supported by the National Science ... A number field K is a finite degree algebraic extension of the ... How to use a computer to compute with many of the above obj
moments to protein function as an alternative method to 3D align- ... of the separation at which the energy passes through a minimum ..... All of these facts.
Computational approach for studying biomolecular site dynamics in cell signaling systems ..... ligand-binding site, which comprises domains I and III of the EGFR ...
components analysis of 152 heterogeneous proteins demonstrated that k codifies ... descriptors used in protein computational chemistry studies. Finally .... Experimental Data ..... Kowalski, R. B.; Wold, S. In Handbook of Statistics; Krishnaiah,.
course in computer science (âCS-1â) due to weak math preparation. There is ... tuned to engage students in Liberal Arts programs by focusing on the .... their first semester of college physics [6]. We prefer to .... accelerated only by gravity.
introduced a media-centric programming course ... professional programs (e.g. nursing) enjoyed learning how ... compared with an opaque distance function.
October 18 - 21, 2009, San Antonio, TX ... 2007 at the University of Texas at El Paso to reduce attrition ... modern object oriented graphical library. As a result,.
Computational Environment to Semi-Automatically Build a Conceptual Model Represented in OntoUML.pdf. Computational Environment to Semi-Automatically ...
Jan 31, 2007 - signature of explicitly directed attention toward visual features, objects, and higher-order .... A 30 Hz digital low-pass filter was applied off-line to ...
Jan 9, 2011 - has fallen by one-quarter over the past ten years [2]. Bloggers, .... British MPs on the Web, and asked viewers to help identify suspicious items.
effect and before effect trials were recorded to check that subjects ... Japan; the Natural Sciences and Engineering Research Council of Canada; and the.