Breakthrough percepts of famous faces

Abstract

Recently, we showed that presenting salient names (i.e., a participant's first name) on the fringe of awareness (in rapid serial visual presentation, RSVP) breaks through into awareness, resulting in the generation of a P3, which (if concealed information is presented) could be used to differentiate between deceivers and nondeceivers. The aim of the present study was to explore whether face stimuli can be used in an ERPbased RSVP paradigm to infer recognition of broadly familiar faces. To do this, we explored whether famous faces differentially break into awareness when presented in RSVP and, importantly, whether ERPs can be used to detect these breakthrough events on an individual basis. Our findings provide evidence that famous faces are differentially perceived and processed by participants' brains as compared to novel (or unfamiliar) faces. EEG data revealed large differences in brain responses between these conditions. K E Y W O R D S deception detection, EEG/ERP, familiarity, famous faces, P3, RSVP, time-frequency analyses 2 of 20 | ALSUFYANI et al.

Concealed information revealed by involuntary eye movements on the fringe of awareness in a mock terror experiment

“…The probes were presented infrequently, one in eight like in a lineup, which is rarer than the typical P300 CIT of 1 in 6 23 and was made possible due to the high speed of presentation (1 Hz without pauses). Fringe of awareness presentation This is similar to previous studies of Bowman et al 18 , 46 , 47 . We presented all stimuli on the fringe of awareness using backward masking with a very short (10 ms) stimulus-of-interest presentation, followed (60 ms gap) by two successive masks (Fig.…”

“…The use of masking followed a previous attempt to detect face familiarity without masking, which did not show good results 2 , and another partly unsuccessful attempt to use RSVP (as in 18 , but using OMI and not P3 ERP). Bowman et al 46 have recently shown that famous (familiar) faces, but not novel (unfamiliar) faces break into awareness in RSVP, resulting in large differences between brain responses to the familiar and unfamiliar. We believe that the same principle works in our case, with the familiar stimuli (the reference, as well as the probes) but not the unfamiliar tending to break into awareness through the masks, resulting in an amplified difference and a sensitive method to dissociate between them.…”

Event-related potentials reflect prediction errors and pop-out during comprehension of degraded speech

“…Under a Global Neuronal Workspace interpretation, this later component could be considered to reflect the breakthrough of a stimulus representation into conscious experience ( Alsufyani et al 2019 ). While we did observe weak evidence of recollection of mismatched targets ( P = 0.020; BF10 = 2.720), indicating that mismatched targets were not entirely unintelligible perhaps due to a degree of perceptual learning across the experiment ( Hervais-Adelman et al 2008 ), attentive participants’ ratings of intelligibility (noisiness) were entirely consistent with the pop-out of meaning following matched primes ( Davis et al 2005 ).…”

Event-related potentials reflect prediction errors and pop-out during comprehension of degraded speech

“…Under a Global Neuronal Workspace interpretation, this later component could be considered to reflect the breakthrough of a stimulus representation into conscious experience (Alsufyani et al, 2019). While we did observe weak evidence of recollection of mismatched targets (p=.020; BF10 = 2.720), indicating that mismatched targets were not entirely unintelligible perhaps due to a degree of perceptual learning across the experiment (Hervais-Adelman et al, 2008), attentive participants' ratings of intelligibility (noisiness) were entirely consistent with the pop-out of meaning following matched primes (Davis et al, 2005).…”