Background: Metamorphopsia includes a broad spectrum of visual perceptual distortions, such as alteration of perceived object size or, rarely, altered perception of faces, termed prosopometamorphopsia.
Case Report: This report describes a patient who complained of metamorphopsia restricted to the center of the face, particularly the lower part of the face (nose and mouth), following infarction of the right medial temporooccipital lobe that included the fusiform face area.
Conclusions: The fusiform face area is commonly believed to be a face-selective cortical region dedicated to the visual analysis of face stimuli. We speculate that any injury to this brain area could bring about prosopometamorphopsia involving whole or unilateral face perception, or very rarely, as in our case, distortion restricted to the central area of the face. Furthermore, there could be topographical correspondences between facial structures and the fusiform face area.
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http://dx.doi.org/10.3988/jcn.2012.8.4.311 | DOI Listing |
Plant Dis
December 2024
Universidade Federal Rural do Semi-Arido, Ciências Agronômicas e Florestais, Mossoro, Rio Grande do Norte, Brazil;
Watermelon (), it's an important fruit in Brazil, producing 1.9 million ton/year, occupies the fifth place in the world, (FAO, 2022), but post-harvest diseases are a major limitation, leading to losses of up to 15% (Balasubramaniam et al. 2023).
View Article and Find Full Text PDFMol Autism
December 2024
Department of Neurosciences, Center for Developmental Psychiatry, KU Leuven, Leuven, Belgium.
Background: Difficulties with (non-verbal) social communication, including facial expression processing, constitute a hallmark of autism. Intranasal administration of oxytocin has been considered a potential therapeutic option for improving social difficulties in autism, either by enhancing the salience of social cues or by reducing the social stress and anxiety experienced in social encounters.
Methods: We recorded fMRI brain activity while presenting neutral, fearful and scrambled faces, to compare the neural face processing signature of autistic children (n = 58) with that of matched non-autistic controls (n = 38).
Emotion
December 2024
Department of Developmental Psychology, Leiden University.
The aim of this study was to examine whether prolonged victimization relates to differential processing of emotions. Based on the social information processing theory, it was hypothesized that prolonged victimization would modulate emotion processing, such that victimization relates to a heightened attentional focus toward negative facial expressions and increased amygdala activation in response to negative facial expressions. We targeted a unique sample of 83 children ( = 10.
View Article and Find Full Text PDFBMC Psychiatry
December 2024
Gillberg Neuropsychiatry Centre, Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Background: Autism is associated with alterations of social communication, such as during face-to-face interactions. This study aimed to probe face processing in autistics with normal IQ utilizing magnetoencephalography to examine event-related fields within the fusiform gyrus during face perception.
Methods: A case-control cohort of 22 individuals diagnosed with autism and 20 age-matched controls (all male, age 29.
Cortex
November 2024
Department of Psychology, University of the Fraser Valley, Abbotsford, Canada.
Current models of face perception and the face-processing network suggest that acquired prosopagnosia may not be a single disorder but rather a family of variants differing in mechanism. It has been proposed that tests of face perception and face imagery can probe component processes to support apperceptive, associative, and amnestic distinctions. However, validating this proposal is hampered by the rarity of this condition.
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