Simon van Gaal
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svangaal.bsky.social
Simon van Gaal
@svangaal.bsky.social
150 followers 75 following 3 posts
Associate Prof at University of Amsterdam. Cognitive psychology/neuroscience. Consciousness, decision making, arousal states. PI in the consciousbrainlab.com
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svangaal.bsky.social
Similar feedback-related neural decoding measures were also informative of having false percepts (e.g., seeing a house when a face was presented). Early decoding: presented stimulus properties; late decoding: neural representation flips and reflects false percept.
journals.plos.org/plosbiology/...
Illusory object recognition is either perceptual or cognitive in origin depending on decision confidence
The occurrence of perceptual illusions, the misinterpretation of sensory input, is a common characteristic of several neurological and psychiatric disorders. This study shows that such illusions have ...
journals.plos.org
June 25, 2025 at 10:04 AM
Reposted by Simon van Gaal
stijnnuiten.bsky.social
Neural and computational analyses further revealed that task effects on preparatory activity over motor cortex, resembling a starting point bias, were smallest on trials with high phasic pupil-linked arousal. (5/6)
Bias manipulation modulates pre-stimulus motor cortex lateralisation, reflecting a starting point bias. This task-related modulation of lateralised activity is weakest on trials with large phasic pupil-linked arousal.
May 19, 2025 at 3:13 PM
Reposted by Simon van Gaal
stijnnuiten.bsky.social
For more details, go check out the full preprint at: dx.doi.org/10.21203/rs.... (6/6)
Phasic and tonic arousal distinctly shape human decision bias
Neuroscientific theories hypothesize that arousal fluctuations influence human perception and behavior in two functionally distinct ways: through variations in baseline state (tonic arousal) and by tr...
dx.doi.org
May 19, 2025 at 3:13 PM