Alexandra Martinez Rodriguez

Alexandra Martinez Rodriguez
University College Dublin | UCD · School of Electrical and Electronic Engineering

Master of Research

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5
Publications
407
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Publications

Publications (5)
Preprint
Full-text available
Perceptual decisions are biased toward higher-value options when overall gains can be improved. When stimuli demand immediate reactions, the neurophysiological decision process dynamically evolves through distinct phases of growing anticipation, detection and discrimination, but how value biases are exerted through these phases remains unknown. Her...
Article
Full-text available
Different accounts have been developed to explain the mechanisms underlying value biases during perceptual decision-making, within the model framework of bounded accumulation. The starting point bias account suggests a shift in the starting point of evidence accumulation, in the direction of the more valuable alternative. The drift rate bias accoun...
Poster
Full-text available
Various computational accounts have been proposed to explain how sensorimotor decisions are biased by value. Although the longstanding dominant account has been the Starting Point Bias model, where the starting point of an evidence-accumulating decision variable is shifted towards the higher value bound, our group recently showed that fast biased d...
Poster
Full-text available
The aim of this study is to investigate the effects of value on early sensory neuronal responses and motor preparation dynamics, during rapid sensorimotor decisions. Different accounts have been developed that try to explain the mechanisms underlying value biases during the decision-making process. The starting point bias account suggests a shift i...
Conference Paper
Full-text available
Various computational accounts have been proposed to explain how sensorimotor decisions are biased by value. Although the longstanding dominant account has been the Starting Point Bias model, where the starting point of an evidence-accumulating decision variable is shifted towards the higher value bound, our group recently showed that fast biased d...

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Projects

Project (1)
Project
This research is about the effect of value on perceptual decision making. We are interested in decisions about visual stimuli made under speed pressure, and how differences in value between decision alternatives affects these decision processes.