A5048398907- Neuroendocrine regulation and behavior
- Evolutionary Psychology and Human Behavior
- Neural and Behavioral Psychology Studies
- Stress Responses and Cortisol
- Transcranial Magnetic Stimulation Studies
- Psychology of Moral and Emotional Judgment
- Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Functional Brain Connectivity Studies
- Memory and Neural Mechanisms
- Neural dynamics and brain function
- Face Recognition and Perception
- Psychosomatic Disorders and Their Treatments
- Mental Health Research Topics
- Hemispheric Asymmetry in Neuroscience
- Hormonal and reproductive studies
- Action Observation and Synchronization
- Child and Adolescent Psychosocial and Emotional Development
- Obsessive-Compulsive Spectrum Disorders
- Psychopathy, Forensic Psychiatry, Sexual Offending
- Personality Disorders and Psychopathology
- Sexual function and dysfunction studies
- Virtual Reality Applications and Impacts
- Sexuality, Behavior, and Technology
- Vestibular and auditory disorders
- Evolutionary Game Theory and Cooperation
University of Cape Town
2015-2024
South African Medical Research Council
2024
Utrecht University
2015-2024
Groote Schuur Hospital
2012-2024
University of Southern California
2024
Vrije Universiteit Amsterdam
2021
South African College of Applied Psychology
2018
University of South Africa
2018
Wellcome Centre for Infectious Diseases Research in Africa
2017
University of Miami
2012
During social interactions we automatically infer motives, intentions, and feelings from bodily cues of others, especially the eye region their faces. This cognitive empathic ability is one most important components intelligence, essential for effective interaction. Females on average outperform males in this empathy, male sex hormone testosterone thought to be involved. Testosterone may not only down-regulate intelligence organizationally, by affecting fetal brain development, but also...
The assumption that testosterone is involved in human female sexual functioning mainly based on results of studies women with hypogonadotropic hypogonadism. This study sought to determine the effect administration physiological and subjective arousal sexually functional women.In a double-masked, randomly assigned, placebo-controlled crossover design, we examined whether single dose increases vaginal when they are exposed erotic visual stimuli. To search for time lag therapy, 8 healthy 6 film...
Trust plays an important role in the formation and maintenance of human social relationships. But trusting others is associated with a cost, given prevalence cheaters deceivers society. Recent research has shown that peptide hormone oxytocin increases trust humans. However, also makes individuals susceptible to betrayal, because under influence oxytocin, subjects perseverate giving they know are untrustworthy. Testosterone, steroid competition dominance, often viewed as inhibitor sociality,...
Several lines of evidence suggest that the cerebellum may play a role in regulation emotion. The aim this study was to investigate hypothesis inhibition cerebellar function using slow repetitive transcranial magnetic stimulation (rTMS) would lead increased negative mood as result impaired emotion regulation. In randomized counterbalanced within-subjects design, 12 healthy young right-handed volunteers received 20 min cerebellar, occipital, or sham 1 Hz rTMS on three separate days. Mood state...
Rodent research delineates how the basolateral amygdala (BLA) and central (CeA) control defensive behaviors, but translation of these findings to humans is needed. Here, we compare with natural-selective bilateral BLA lesions rats a chemogenetically silenced BLA. We find, across species, an essential role for in selection active escape over passive freezing during exposure imminent yet escapable threat (Timm). In response Timm, BLA-damaged showed increased startle potentiation BLA-silenced...
Throughout vertebrate phylogeny, testosterone has motivated animals to obtain and maintain social dominance—a fact suggesting that unconscious primordial brain mechanisms are involved in dominance. In humans, however, the prevailing view is neocortex control of drives, thought promote dominance via conscious feelings superiority, indefatigability, strength, anger. Here we show administration humans prolongs dominant staring into eyes threatening faces viewed outside awareness, without...
Approach–avoidance generally describes appetitive motivation and fear of punishment. In a social context approach is, however, also expressed as aggression dominance. We therefore link approach–avoidance to dominance–submissiveness, provide neural framework that how the steroid hormone testosterone shifts reflexive well deliberate behaviors towards dominance promotion status. Testosterone inhibits acute at level basolateral amygdala hypothalamus promotes reactive through upregulation...