Marco Grabemann - Academia.edu (original) (raw)
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Papers by Marco Grabemann
PLoS ONE, 2012
Background: The neurotransmitter serotonin (5-HT) has been linked to the underlying neurobiology ... more Background: The neurotransmitter serotonin (5-HT) has been linked to the underlying neurobiology of aggressive behavior, particularly with evidence from studies in animals and humans. However, the underlying neurobiology of aggression remains unclear in the context of attention-deficit/hyperactivity disorder (ADHD), a disorder known to be associated with aggression and impulsivity. We investigated the effects of acute tryptophan depletion (ATD), and the resulting diminished central nervous serotonergic neurotransmission, on reactive aggression in healthy controls and adults with ADHD.
Behavioural Brain Research, 2009
Modern theoretical accounts on reward-based learning are commonly based on reinforcement learning... more Modern theoretical accounts on reward-based learning are commonly based on reinforcement learning algorithms. Most noted in this context is the temporal-difference (TD) algorithm in which the difference between predicted and obtained reward, the prediction-error, serves as a learning signal. Consequently, larger rewards cause bigger prediction-errors and lead to faster learning than smaller rewards. Therefore, if animals employ a neural implementation of TD learning, reward-magnitude should affect learning in animals accordingly.
Acta Psychiatrica Scandinavica, 2013
The impact of acute tryptophan depletion on attentional performance in adult patients with ADHD.
Acta Psychiatrica Scandinavica, 2013
Kis B. No clear effects of acute tryptophan depletion on processing affective prosody in male adu... more Kis B. No clear effects of acute tryptophan depletion on processing affective prosody in male adults with ADHD.
PLoS ONE, 2012
Background: The neurotransmitter serotonin (5-HT) has been linked to the underlying neurobiology ... more Background: The neurotransmitter serotonin (5-HT) has been linked to the underlying neurobiology of aggressive behavior, particularly with evidence from studies in animals and humans. However, the underlying neurobiology of aggression remains unclear in the context of attention-deficit/hyperactivity disorder (ADHD), a disorder known to be associated with aggression and impulsivity. We investigated the effects of acute tryptophan depletion (ATD), and the resulting diminished central nervous serotonergic neurotransmission, on reactive aggression in healthy controls and adults with ADHD.
Behavioural Brain Research, 2009
Modern theoretical accounts on reward-based learning are commonly based on reinforcement learning... more Modern theoretical accounts on reward-based learning are commonly based on reinforcement learning algorithms. Most noted in this context is the temporal-difference (TD) algorithm in which the difference between predicted and obtained reward, the prediction-error, serves as a learning signal. Consequently, larger rewards cause bigger prediction-errors and lead to faster learning than smaller rewards. Therefore, if animals employ a neural implementation of TD learning, reward-magnitude should affect learning in animals accordingly.
Acta Psychiatrica Scandinavica, 2013
The impact of acute tryptophan depletion on attentional performance in adult patients with ADHD.
Acta Psychiatrica Scandinavica, 2013
Kis B. No clear effects of acute tryptophan depletion on processing affective prosody in male adu... more Kis B. No clear effects of acute tryptophan depletion on processing affective prosody in male adults with ADHD.