Introduction: The right fusiform face area (FFA) is important for face recognition, whereas the left visual word fusiform area (VWFA) is critical for word processing. Nevertheless, the early stages of unconscious and conscious face and word processing have not been studied systematically.
Materials And Methods: To explore hemispheric differences for face and word recognition, we manipulated the visual field (left vs. right) and stimulus duration (subliminal [17 ms] versus supraliminal [300 ms]). We recorded P100 and N170 peaks with high-density ERPs in response to faces/objects or Japanese words/scrambled words in 18 healthy young subjects.
Results: Contralateral P100 was larger than ipsilateral P100 for all stimulus types in the supraliminal, but not subliminal condition. The face- and word-N170s were not evoked in the subliminal condition. The N170 amplitude for the supraliminal face stimuli was significantly larger than that for the objects, and right hemispheric specialization was found for face recognition, irrespective of stimulus visual hemifield. Conversely, the supraliminal word-N170 amplitude was not significantly modulated by stimulus type, visual field, or hemisphere.
Conclusions: These results suggest that visual awareness is crucial for face and word recognition. Our study using hemifield stimulus presentation further demonstrates the robust right FFA for face recognition but not the left VWFA for word recognition in the Japanese brain.
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http://dx.doi.org/10.1002/brb3.1649 | DOI Listing |
Sci Rep
January 2025
Department of Information Systems, University of Haifa, Haifa, Israel.
This study explores the question whether Artificial Intelligence (AI) can outperform human experts in animal pain recognition using sheep as a case study. It uses a dataset of N = 48 sheep undergoing surgery with video recordings taken before (no pain) and after (pain) surgery. Four veterinary experts used two types of pain scoring scales: the sheep facial expression scale (SFPES) and the Unesp-Botucatu composite behavioral scale (USAPS), which is the 'golden standard' in sheep pain assessment.
View Article and Find Full Text PDFBehav Res Methods
January 2025
Department of Psychology, University of Quebec at Trois-Rivières, Trois-Rivières, Canada.
Frequently, we perceive emotional information through multiple channels (e.g., face, voice, posture).
View Article and Find Full Text PDFAlzheimers Dement
December 2024
The University of Texas Health Science Center at Houston, Houston, TX, USA.
Background: Pneumococcal meningitis is a type of meningitis that may face long-term neurological complications, leading to the hypothesis that it might contribute to the deposition of beta-amyloid (Aβ) and predispose individuals to Alzheimer's pathology.
Method: Male and female APP/PS1 mice, 50 days old, were divided into control (n = 5) and meningitis (n = 6). Under anesthesia, an intracisternal injection of either artificial cerebrospinal fluid (CSF) as a placebo or 5 × 10 colony-forming units (CFU) of S.
Alzheimers Dement
December 2024
IMoPA, UMR 7365, CNRS-Université de Lorraine, Nancy, France.
Background: While Alzheimer Disease (AD) patients' difficulty to recognize face identity (Werheid & Clare, 2007) has been mainly attributed to episodic and semantic memory impairments, these patients can also show abnormal difficulties at matching of unfamiliar faces for their identity, suggesting impaired perceptual function (Lavallée et al., 2016). However, since this latter evidence is based on explicit behavioural measures, the difficulties of AD patients can be due to many factors (e.
View Article and Find Full Text PDFJ Craniofac Surg
January 2025
Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark.
Background: Nasal septal abscesses (NSA) necessitate prompt recognition and management to prevent morbidity and long-term sequelae. To date, no comprehensive review of NSA alone has been conducted.
Objective: To conduct a systematic review of the presentation and management of NSA and determine patients at risk of sequelae.
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