How relevant are specific perceptual features for the quick categorization of evolutionary-relevant stimuli? We used augmented reality to measure the nature/nurture role in processing hairiness of spiders. A sample of 75 more-or-less spiderfearful participants was administered emotionally-subliminal holograms representing phobic (hairy or glabrous spiders), generically-fearful (bear), or neutral (deers, birds) stimuli while recording their electroencephalographic (EEG) activity. Event-related potentials (ERPs) showed significant differences between hairy and glabrous spiders at early latencies (120 ms), suggesting that the spider's hairiness is distinguished yet at pre-conscious stages of visual processing.
Perceptual Features of Emotionally-Subliminal Phobic Stimuli Elicit Differences in ERPs: A Study on Holographic Spiders Shown in Augmented Reality
Frumento S.;Callara A. L.;Menicucci D.;Scilingo E. P.;Greco A.;Gemignani A.
2024-01-01
Abstract
How relevant are specific perceptual features for the quick categorization of evolutionary-relevant stimuli? We used augmented reality to measure the nature/nurture role in processing hairiness of spiders. A sample of 75 more-or-less spiderfearful participants was administered emotionally-subliminal holograms representing phobic (hairy or glabrous spiders), generically-fearful (bear), or neutral (deers, birds) stimuli while recording their electroencephalographic (EEG) activity. Event-related potentials (ERPs) showed significant differences between hairy and glabrous spiders at early latencies (120 ms), suggesting that the spider's hairiness is distinguished yet at pre-conscious stages of visual processing.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
