Background: Recent investigations suggest that experience plays an important role in the development of face processing. The aim of this study was to investigate the potential role of experience in the development of the ability to process facial expressions of emotion.
Method: We examined the potential role of experience indirectly by investigating the relationship between the emotional environment provided by mothers (as indexed by affective measures of their personality) and 7-month-olds' processing of emotional expressions (as indexed by visual attention and event-related potentials [ERPs]).
Results: For positive emotion, infants with highly positive mothers looked longer at fearful than happy expressions, and a subset of these infants who themselves also scored highly on positive temperament showed a larger negative central (Nc) component in the ERP to fearful than happy faces. For negative emotion, there were no detectable influences of maternal personality, although very fearful infants showed a larger Nc to fearful than happy expressions over the right hemisphere.
Conclusion: To the extent that these variations in maternal disposition reflect variations in their expression of positive facial expressions, these results suggest that the emotional environment experienced by infants contributes to the development of their responses to facial expressions.
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http://dx.doi.org/10.1111/j.1469-7610.2004.00320.x | DOI Listing |
Introduction: Systemic lupus erythematosus (SLE) is a chronic inflammatory autoimmune disease that affects various body systems, including the skin and facial features. Estrogen promotes lupus in human and mouse models of SLE. In this study, we conducted an in vivo study to investigate the relationship between two estrogen receptors (ERα and ERβ) and platelet-activating factor acetylhydrolase (PAF-AH) on the symptoms of SLE.
View Article and Find Full Text PDFJ Exp Psychol Gen
January 2025
Department of Psychology, Hebrew University of Jerusalem.
Emotion perception is a fundamental aspect of our lives because others' emotions may provide important information about their reactions, attitudes, intentions, and behavior. Following the seminal work of Ekman, much of the research on emotion perception has focused on facial expressions. Recent evidence suggests, however, that facial expressions may be more ambiguous than previously assumed and that context also plays an important role in deciphering the emotional states of others.
View Article and Find Full Text PDFPLoS One
January 2025
Department of Psychology, Lyon College, Batesville, Arkansas, United States of America.
There has been an increased interest in standardized approaches to coding facial movement in mammals. Such approaches include Facial Action Coding Systems (FACS), where individuals are trained to identify discrete facial muscle movements that combine to create a facial configuration. Some studies have utilized FACS to analyze facial signaling, recording the quantity of morphologically distinct facial signals a species can generate.
View Article and Find Full Text PDFPLoS One
January 2025
Division of Oral Physiology, Faculty of Dentistry, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
This study examined the effects of treadmill running (TR) regimens on craniofacial pain- and anxiety-like behaviors, as well as their effects on neural changes in specific brain regions of male mice subjected to repeated social defeat stress (SDS) for 10 days. Behavioral and immunohistochemical experiments were conducted to evaluate the impact of TR regimens on SDS-related those behaviors, as well as epigenetic and neural activity markers in the anterior cingulate cortex (ACC), insular cortex (IC), rostral ventromedial medulla (RVM), and cervical spinal dorsal horn (C2). Behavioral responses were quantified using multiple tests, while immunohistochemistry measured histone H3 acetylation, histone deacetylases (HDAC1, HDAC2), and neural activity markers (FosB and phosphorylated cAMP response element-binding protein (pCREB).
View Article and Find Full Text PDFCraniofacial development gives rise to the complex structures of the face and involves the interplay of diverse cell types. Despite its importance, our understanding of human-specific craniofacial developmental mechanisms and their genetic underpinnings remains limited. Here, we present a comprehensive single-nucleus RNA sequencing (snRNA-seq) atlas of human craniofacial development from craniofacial tissues of 24 embryos that span six key time points during the embryonic period (4-8 post-conception weeks).
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