A recent model of face processing proposes that face shape and motion are processed in parallel brain pathways. Although tested in neuroimaging, the assumptions of this theory remain relatively untested through controlled psychophysical studies until now. Recruiting undergraduate students over the age of 18, we test this hypothesis using a tight control of stimulus factors, through computerized three-dimensional face models and calibration of dimensional discriminability, and of decisional factors, through a model-based analysis using general recognition theory (GRT).
View Article and Find Full Text PDFTrypophobia refers to the extreme negative reaction when viewing clusters of circular objects. Two major evolutionary frameworks have been proposed to account for trypophobic visual discomfort. The (SD) framework proposes that trypophobia is an over-generalised response to stimuli resembling pathogen-related skin diseases.
View Article and Find Full Text PDFGonadal steroid hormones affect the organization of the brain during sensitive periods of development, resulting in sex differences in the neuroendocrine function and behaviour of the offspring. Although alterations in developmental testosterone exposure have been hypothesized to play a role in male-biased neurodevelopmental disorders, the underlying mechanisms remain unknown. The present study investigated the hypothesis that early prenatal exposure to low concentrations of testosterone might affect the control of stress responses in later life.
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