Browsing Psychology by Author "O'Connell, Redmond"
Now showing items 1-19 of 19
-
An investigation of error awareness in healthy ageing and a non-invasive approach to its amelioration
Harty, Siobhán (Trinity College (Dublin, Ireland). School of Psychology, 2014)Population ageing has become a global phenomenon. This demographic change flags the remarkable developments made by humanity in recent history, but it also constitutes one of the most challenging problems for contemporary ... -
Balancing true and false detection of intermittent sensory targets by adjusting the inputs to the evidence accumulation process
O'Connell, Redmond (2023)Decisions about noisy stimuli are widely understood to be made by accumulating evidence up to a decision bound that can be adjusted according to task demands. However, relatively little is known about how such mechanisms ... -
Bridging Neural and Computational Viewpoints on Perceptual Decision-Making
O'Connell, Redmond (2018) -
Confidence is predicted by pre- and post-choice decision signal dynamics
O'Connell, Redmond; Grogan, John (2023)It is well established that one’s confidence in a choice can be influenced by new evidence encountered after commitment has been reached, but the processes through which post-choice evidence is sampled remain unclear. To ... -
An electrophysiological signal that precisely tracks the emergence of error awareness.
Robertson, Ian; O'Connell, Redmond (2012)Recent electrophysiological research has sought to elucidate the neural mechanisms necessary for the conscious awareness of action errors. Much of this work has focused on the error positivity (Pe), a neural signal that ... -
The impact of natural aging on computational and neural indices of perceptual decision making: A review
O'Connell, Redmond (2018) -
Internal and external influences on the rate of sensory evidence accumulation in the human brain.
O'Connell, Redmond (2013)We frequently need to make timely decisions based on sensory evidence that is weak, ambiguous, or noisy resulting from conditions in the external environment (e.g., a cluttered visual scene) or within the brain itself ... -
Measurement of locus coeruleus : noradrenergic function in the human brain and its influence on executive function
Murphy, Peter R. (Trinity College (Dublin, Ireland). School of Psychology, 2012)The brainstem nucleus locus coeruleus (LC) projects to nearly the entire brain, and has the capacity to dramatically affect neural processing via release of the neurochemical noradrenaline (NE). Although recent theories ... -
Multiphasic value biases in fast-paced decisions
O'Connell, Redmond (2023)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 ... -
The neural processes underlying perceptual decision making in humans: Recent progress and future directions
O'Connell, Redmond (2015) -
Neurocomputational mechanisms of prior-informed perceptual decision-making in humans
O'Connell, Redmond (2021)To interact successfully with diverse sensory environments, we must adapt our decision processes to account for time constraints and prior probabilities. The full set of decision-process parameters that undergo such flexible ... -
Neurophysiology of Human Perceptual Decision-Making
O'Connell, Redmond (2021)The discovery of neural signals that reflect the dynamics of perceptual decision formation has had a considerable impact. Not only do such signals enable detailed investigations of the neural implementation of the ... -
Transcranial direct current stimulation over right dorsolateral prefrontal cortex enhances error awareness in older age
Robertson, Ian; O'Connell, Redmond (2014)The ability to detect errors during cognitive performance is compromised in older age and in a range of clinical populations. This study was designed to assess the effects of transcranial direct current stimulation (tDCS) ...