Preliminary evidence that digit length ratio (2D:4D) predicts neural response to delivery of motivational stimuli
| Autor: | Heather E. Soder, Troy A. Webber, Geoffrey F. Potts, Marina A. Bornovalova |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Male
medicine.medical_specialty Punishment (psychology) Audiology Article 050105 experimental psychology Developmental psychology Fingers Young Adult 03 medical and health sciences 0302 clinical medicine Punishment Reward Pregnancy medicine Humans Body Weights and Measures Testosterone 0501 psychology and cognitive sciences Valence (psychology) Evoked Potentials Motivation General Neuroscience 05 social sciences Negativity effect Medial frontal cortex Numerical digit Neuropsychology and Physiological Psychology Prenatal Exposure Delayed Effects Maternal Exposure Female Outcome prediction Psychology psychological phenomena and processes 030217 neurology & neurosurgery |
| Zdroj: | Biological Psychology. 132:91-95 |
| ISSN: | 0301-0511 |
| Popis: | Reduced relative length of the 2nd to 4th digits (2D:4D) is thought to partially reflect fetal testosterone (FT) exposure, a process suspected to promote relatively permanent effects on the brain and behavior via structural and functional neuroadaptations. We examined the effect of 2D:4D on neural response – assessed by P2a and feedback-related negativity (FRN) event-related potentials (ERPs) – to motivational stimuli (reward or punishment) using two counterbalanced conditions of a passive S1/S2 outcome prediction design. P2a to expected and unexpected delivered rewards or punishments ($1 or white noise burst, respectively) and FRN to withheld rewards or punishments ($0 or silence, respectively) were observed in undergraduates. Lower left 2D:4D and greater 2D:4DR-L predicted amplified P2a to the delivery (but not FRN to the omission) of motivationally salient stimuli, regardless of valence and probability. These preliminary findings suggest that FT may organize dopamine neurons to respond more strongly to the delivery of motivational stimuli. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect