Encarni Marcos

TL;DR: This work develops analyses to parcellate neural activity into computationally distinct dynamical regimes and finds that low-dimensional trajectories provide a mechanism for the brain to solve the problem of storing information across time while simultaneously retaining the timing information necessary for anticipating events and coordinating behavior.

TL;DR: This study studies the influence of recent experience on motor decision making by analyzing the activity of neurons in the dorsal premotor area of two monkeys performing a countermanding arm task and reveals that the across-trial variability of the neural response strongly correlates with trial history-dependent changes in reaction time.

TL;DR: This work presented subjects with a variant of the classic constant-coherence motion discrimination (CMD) task in which brief motion pulses were inserted and examined the effect of these pulses on reaction times in two conditions: when the CMD trials were blocked and subjects responded quickly and when the same CMD Trials were interleaved among trials of a variable-motion coherence task that motivated slower decisions.

TL;DR: A psychophysical experiment in which human subjects were presented with a random dot motion discrimination task and asked to report the perceived motion direction using movements of different biomechanical cost found that the pattern of decisions exhibited a significant bias towards the movement of lower cost, even when this bias reduced performance accuracy.

TL;DR: DAC-X is proposed, a novel cognitive architecture that unifies the theoretical principles of DAC with biologically constrained computational models of several areas of the mammalian brain and supports complex foraging strategies through the progressive acquisition, retention and expression of task-dependent information.