1,721,052 research outputs found
Unconscious and symbolic cues reflect an automatic shift of attentional orienting
No full textPeripheral abrupt onset cues induce automatic shifts of attention, even if not consciously perceived. This study would examine the relationship between endogenous spatial orienting and unconscious perception, using a spatial cueing task. Three experiments assessed predictive, unpredictive or counterpredictive cues, that were rendered invisible by object substitution masking in half of the trials. The results show a facilitation in the attended (cued) location with both seen and unseen cues (experiments 1 and 2), and for targets presented in the unattended but cued location (experiment 3), suggesting that endogenous cues could evoke automatic shifts of attention, even if not consciously perceived
Premio “Franco Purghè” per ricerche in psicologia della percezione o psicofisica, AIP-Associazione Italiana di Psicologia, Sezione di Psicologia Sperimentale
No full textL’interazione a basso livello dell’effetto di sostituzione dell’oggetto dipende da fattori top-down
No full textA dynamic 4-dot mask: the size of masking on coloured stimuli
No full textThe visibility of a target is reduced when a lateral mask remains on the display after the target disappears. This effect seems to be independent of the image-level characteristics of the stimulus. This study would verify the efficacy of a 4-dot masking, in which an apparent motion illusion is added on coloured stimuli otherwise difficult to mask. Both localization and colour identification tasks are assessed, in both masked and unmasked conditions. Results show the efficacy of this dynamic masking on coloured stimuli, and seem to confirm the independence of 4-dot masking from the visual characteristics of stimuli
Catalogo della Mostra Le pergamene dell'Archivio Storico Comunale di Oristano. Secc. XV-XVII
No full text
Inter-hemispheric Transfer (IT) deficit in alexithymia: evidences by a Poffenberger paradigm with neutral and emotional stimuli
No full textHemispheric transfer in alexithymic subjects
No full textThe emotion-feeling dissociation, which characterizes alexithymic subjects, has been ascribed to an impairment in callosal transfer of information. However, the results are not always unambiguous and they are often found using low sensitive interhemispheric transfer measures. We proposed to evaluate this hypothesis using a Poffemberger paradigm on half alexithymic and half nonalexithymic subjects. Results showed shorter RT in the uncrossed as respect to crossed conditions and an impairment, specific for the transfer from the right hemisphere to the left, only in the non alexithymic subjects, suggesting a specific disadvantage for the emotional hemisphere
Visual Masking in prolonged wakefulness
No full textThe aim of the present study was to evaluate the effect of sleep deprivation on object substitution masking (OSM). Since both automatic and voluntary shifts of attention toward the mask are involved in OSM, and sleep loss affects voluntary spatial orienting, we expected OSM to be affected by moderate (24h) sleep deprivation. Results showed a small but robust reduction of OSM confirming the involvement of voluntary attention in OSM, but suggesting that it is mainly due to automatic attention. Results also confirmed that sleep-deprived individuals may adopt an automatic, instead of voluntary, modality of control
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