Adrian G Fischer
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Explore the profile of Adrian G Fischer including associated specialties, affiliations and a list of published articles.
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22
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453
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Recent Articles
1.
Cortical β Power Reflects a Neural Implementation of Decision Boundary Collapse in Speeded Decisions
Kirschner H, Fischer A, Danielmeier C, Klein T, Ullsperger M
J Neurosci
. 2024 Feb;
44(13).
PMID: 38360748
A prominent account of decision-making assumes that information is accumulated until a fixed response threshold is crossed. However, many decisions require weighting of information appropriately against time. Collapsing response thresholds...
2.
Kirschner H, Nassar M, Fischer A, Frodl T, Meyer-Lotz G, Frobose S, et al.
Brain
. 2023 Dec;
147(1):201-214.
PMID: 38058203
Deficits in reward learning are core symptoms across many mental disorders. Recent work suggests that such learning impairments arise by a diminished ability to use reward history to guide behaviour,...
3.
Overmeyer R, Kirschner H, Fischer A, Endrass T
Sci Rep
. 2023 Nov;
13(1):19180.
PMID: 37932359
Performance monitoring (PM) is a vital component of adaptive behavior and known to be influenced by motivation. We examined effects of potential gain (PG) and loss avoidance (LA) on neural...
4.
Kirschner H, Fischer A, Ullsperger M
Neuroimage
. 2022 Jul;
259:119437.
PMID: 35788041
Optimal decision making in complex environments requires dynamic learning from unexpected events. To speed up learning, we should heavily weight information that indicates state-action-outcome contingency changes and ignore uninformative fluctuations...
5.
Kirsch F, Kirschner H, Fischer A, Klein T, Ullsperger M
Neuroimage
. 2022 May;
257:119322.
PMID: 35577025
The feedback-related negativity (FRN) is a well-established electrophysiological correlate of feedback-processing. However, there is still an ongoing debate whether the FRN is driven by negative or positive reward prediction errors...
6.
Derrfuss J, Danielmeier C, Klein T, Fischer A, Ullsperger M
Behav Res Methods
. 2021 Oct;
54(3):1416-1427.
PMID: 34713426
We typically slow down after committing an error, an effect termed post-error slowing (PES). Traditionally, PES has been calculated by subtracting post-correct from post-error RTs. Dutilh et al. (Journal of...
7.
Schuller T, Gruendler T, Smith E, Baldermann J, Kohl S, Fischer A, et al.
Neuroimage Clin
. 2021 Jul;
31:102746.
PMID: 34229156
Background: Symptoms of obsessive-compulsive disorder (OCD) are partly related to impaired cognitive control processes and theta modulations constitute an important electrophysiological marker for cognitive control processes such as signaling negative...
8.
Schuller T, Fischer A, Gruendler T, Baldermann J, Huys D, Ullsperger M, et al.
Cortex
. 2020 Feb;
126:39-48.
PMID: 32062469
Objective: Tourette syndrome is a neurodevelopmental disorder putatively associated with a hyperdopaminergic state. Therefore, it seems plausible that excessive dopamine transmission in Tourette syndrome alters the ability to learn based...
9.
Burnside R, Fischer A, Ullsperger M
Psychophysiology
. 2019 May;
56(9):e13389.
PMID: 31054155
Reinforcement learning (RL) theory states that learning is driven by prediction errors (PEs)-the discrepancy between the predicted and actual outcome of an action. When participants learn from their own actions,...
10.
Cortical beta power reflects decision dynamics and uncovers multiple facets of post-error adaptation
Fischer A, Nigbur R, Klein T, Danielmeier C, Ullsperger M
Nat Commun
. 2018 Nov;
9(1):5038.
PMID: 30487572
Adapting to errors quickly is essential for survival. Reaction slowing after errors is commonly observed but whether this slowing is adaptive or maladaptive is unclear. Here, we analyse a large...