B. Quednow

Publications190
h-index37
Citations3,780
Highly Influential Citations211
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MDMA enhances emotional empathy and prosocial behavior.
3,4-Methylenedioxymethamphetamine (MDMA, 'ecstasy') releases serotonin and norepinephrine. MDMA is reported to produce empathogenic and prosocial feelings. It is unknown whether MDMA in fact alters… Expand
  • 138
  • 17
  • Open Access
Differential effects of MDMA and methylphenidate on social cognition
Social cognition is important in everyday-life social interactions. The social cognitive effects of 3,4-methylenedioxymethamphetamine (MDMA, ‘ecstasy’) and methylphenidate (both used for… Expand
  • 82
  • 14
  • Open Access
Impaired Prepulse Inhibition of Acoustic Startle in Obsessive-Compulsive Disorder
BACKGROUND Animal and clinical studies suggest that impaired sensorimotor gating, as assessed with the prepulse inhibition (PPI) paradigm, may result from dysfunctional frontostriatal brain circuits… Expand
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On the influence of baseline startle reactivity on the indexation of prepulse inhibition.
Prepulse inhibition (PPI) of the startle reflex refers to the reduction of the reflexive startle response to an intense pulse stimulus when its presentation is shortly preceded by a weak prepulse… Expand
  • 95
  • 10
  • Open Access
Sensorimotor Gating and Habituation of the Startle Response in Schizophrenic Patients Randomly Treated With Amisulpride or Olanzapine
BACKGROUND Schizophrenic patients exhibit impairments in prepulse inhibition (PPI) and habituation of the acoustic startle response (ASR). Recent studies suggested that PPI deficits and habituation… Expand
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  • 9
Elevated impulsivity and impaired decision-making cognition in heavy users of MDMA (“Ecstasy”)
RationaleIn animal studies, the common club drug 3,4-methylendioxymethamphetamine (MDMA, “Ecstasy”) consistently caused a prolonged loss of presynaptic serotonergic neurons, and evidence suggests… Expand
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  • 9
  • Open Access
Memory deficits in abstinent MDMA (ecstasy) users: neuropsychological evidence of frontal dysfunction
Chronic administration of the common club drug 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) is associated with long-term depletion of serotonin (5-HT) and loss of 5-HT axons in the brains of… Expand
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The Effects of the Preferential 5-HT2A Agonist Psilocybin on Prepulse Inhibition of Startle in Healthy Human Volunteers Depend on Interstimulus Interval
Schizophrenia patients exhibit impairments in prepulse inhibition (PPI) of the startle response. Hallucinogenic 5-HT2A receptor agonists are used for animal models of schizophrenia because they mimic… Expand
  • 88
  • 6
  • Open Access
Psilocybin-Induced Deficits in Automatic and Controlled Inhibition are Attenuated by Ketanserin in Healthy Human Volunteers
The serotonin-2A receptor (5-HT2AR) has been implicated in the pathogenesis of schizophrenia and related inhibitory gating and behavioral inhibition deficits of schizophrenia patients. The… Expand
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  • 6
  • Open Access
Impaired emotional empathy and related social network deficits in cocaine users
Chronic cocaine users consistently display neurochemical and functional alterations in brain areas involved in social cognition (e.g. medial and orbitofrontal cortex). Although social functioning… Expand
  • 82
  • 6
  • Open Access