Uncertainty, Neuromodulation, and Attention
نویسندگان
چکیده
منابع مشابه
Uncertainty, Neuromodulation, and Attention
Uncertainty in various forms plagues our interactions with the environment. In a Bayesian statistical framework, optimal inference and prediction, based on unreliable observations in changing contexts, require the representation and manipulation of different forms of uncertainty. We propose that the neuromodulators acetylcholine and norepinephrine play a major role in the brain's implementation...
متن کاملUncertainty and Neuromodulation: Focus on Acetylcholine and Sustained Attention
Decision making is an essential component of intelligent behavior. Whether interpreting sensory inputs, allocating cognitive resources, or planning actions, the brain constantly makes decisions based on noisy inputs and competing objectives. Understanding decision making at both the psychological and neurobiological levels is an important problem in neuroscience, and has received increasing the...
متن کاملNeuromodulation of Attention
Attention is critical to high-level cognition and attention deficits are a hallmark of neurologic and neuropsychiatric disorders. Although years of research indicates that distinct neuromodulators influence attentional control, a mechanistic account that traverses levels of analysis (cells, circuits, behavior) is missing. However, such an account is critical to guide the development of next-gen...
متن کاملAttention, Uncertainty, and Free-Energy
We suggested recently that attention can be understood as inferring the level of uncertainty or precision during hierarchical perception. In this paper, we try to substantiate this claim using neuronal simulations of directed spatial attention and biased competition. These simulations assume that neuronal activity encodes a probabilistic representation of the world that optimizes free-energy in...
متن کاملUncertainty and attention in audiovisual speech perception
This study deals with uncertainty and attention in audiovisual speech perception. Subjects were exposed to audiovisual stimuli where independent variable was bivalent: either blocked to one ear or uncertainty about in which ear the next stimulus would appear. The hypothesis, that uncertainty would inhibit audiovisual integration was motivated by an earlier study (Öhrström et al, 2011) but these...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Neuron
سال: 2005
ISSN: 0896-6273
DOI: 10.1016/j.neuron.2005.04.026