Varying Stimulus Duration Reveals Consistent Neural Activity and Behavior for Human Face Individuation. (15th September 2021)

• Record Type: Journal Article
• Authors: Retter, Talia L.; Jiang, Fang; Webster, Michael A.; Michel, Caroline; Schiltz, Christine; Rossion, Bruno
• Is Part Of: Neuroscience. Volume 472(2021)
• Page Start: 138
• Page End: 156
• Publication Date: 2021-09-15
• Subjects: ANOVA analysis-of-variance -- Bl baseline -- EEG electroencephalogram -- F stimulus presentation frequency -- F/n oddball presentation frequency -- FFT fast Fourier transform -- FI face individuation -- IE inverse efficiency -- LOT left occipito-temporal subregion -- MEG magnetoencephalogram -- N oddball stimulus presentation proportion -- OT occipito-temporal -- ROI region of interest -- ROT right occipito-temporal subregion -- RT response time -- SOA stimulus-onset asynchrony; individual differences -- identity -- temporal dynamics -- frequency sweep -- SSVEP -- FPVS; Neurochemistry -- Periodicals; Neurophysiology -- Periodicals; Neurology -- Periodicals; Neurochimie -- Périodiques; Neurophysiologie -- Périodiques; Neurochemistry; Neurophysiology; Electronic journals; Periodicals; Electronic journals; 612.8
• DOI: 10.1016/j.neuroscience.2021.07.025
• Languages: English
• ISSNs: 0306-4522

Abstract

Highlights: Brain–behavior relationships probed with oddball and frequency-sweep paradigms. Convergent behavioral and neural measures at group and individual levels. Face individuation minimum at 50 ms and optimum at 170 ms stimulus duration. Large inter-individual differences in neural and behavioral responses at mid-rates. Neural peak latency at ~185 ms predicted individuals' behavioral accuracy. Abstract: Establishing consistent relationships between neural activity and behavior is a challenge in human cognitive neuroscience research. We addressed this issue using variable time constraints in an oddball frequency-sweep design for visual discrimination of complex images (face exemplars). Sixteen participants viewed sequences of ascending presentation durations, from 25 to 333 ms (40–3 Hz stimulation rate) while their electroencephalogram (EEG) was recorded. Throughout each sequence, the same unfamiliar face picture was repeated with variable size and luminance changes while different unfamiliar facial identities appeared every 1 s (1 Hz). A neural face individuation response, tagged at 1 Hz and its unique harmonics, emerged over the occipito-temporal cortex at 50 ms stimulus duration (25–100 ms across individuals), with an optimal response reached at 170 ms stimulus duration. In a subsequent experiment, identity changes appeared non-periodically within fixed-frequency sequences while the same participants performed an explicit face individuation task. The behavioral face individuation response also emerged at 50 ms presentation time, and behavioral accuracy correlated with individual participants' neural response amplitude in a weighted middle stimulus duration range (50–125 ms). Moreover, the latency of the neural response peaking between 180 and 200 ms correlated strongly with individuals' behavioral accuracy in this middle duration range, as measured independently. These observations point to the minimal (50 ms) and optimal (170 ms) stimulus durations for human face individuation and provide novel evidence that inter-individual differences in the magnitude and latency of early, high-level neural responses are predictive of behavioral differences in performance at this function.