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How do associative prosopagnosia work neurologically?

Apperceptive agnosia

Bidirectional associative memory

Visual perception

Fusiform face area

Capgras delusion

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Associative prosopagnosia, a form of visual agnosia, results from brain lesions affecting face recognition. The fusiform face area (FFA) is commonly implicated in prosopagnosia. Controversies exist regarding whether unilateral lesions can cause prosopagnosia, the presence of dedicated face-processing cells, and whether it stems from memory or perceptual deficits. Prosopagnosia patients struggle to recognize familiar faces visually but can identify them through other cues like voice or context. Developmental prosopagnosia (DP) is a related condition without manifest brain injuries, possibly linked to reduced holistic face processing and mnemonic challenges. Neurologically, prosopagnosia involves disruptions in face-selective brain regions and connectivity, impacting both face and object recognition abilities.

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Open access•Dissertation Understanding the cognitive mechanisms of developmental prosopagnosia Federica Biotti 01 Jan 2018 1 Citations	Not addressed in the paper.
Book Chapter•DOI The Cognitive Psychophysiology of Prosopagnosia Russell M. Bauer 01 Jan 1986 79 Citations	Associative prosopagnosia involves brain damage leading to the inability to recognize familiar faces visually, while retaining recognition through voice or other cues, distinct from perceptual or memory deficits.
Proceedings Article•DOI Modeling prosopagnosia using dynamic artificial neural networks Robyn Vandermeulen, Laurence Morissette, Sylvain Chartier - Show less +2 more 03 Oct 2011 4 Citations	Associative prosopagnosia in the brain involves lesions disrupting connections between semantic labels and visual face information, leading to the inability to recognize faces despite perceiving their structural features.
Open access Mo deling Prosopagnosia Using Dynamic Artificial Neura l Networks Laurence Morissette, Sylvain Cha - Show less +1 more 01 Jan 2011	Associative prosopagnosia involves lesions, often in the fusiform face area, affecting face recognition. Models like FEBAM-SOM and BAM simulate this by categorizing faces and linking them to semantic labels.
Open access Prosopagnosia: A look at the laterality and specificity issues using evidence from neuropsychology and neurophysiology Mike Takamura 01 Jan 1996 6 Citations	Prosopagnosia, a form of visual associative agnosia, results from lesions in the medial occipitotemporal region, leading to the inability to recognize familiar faces. Specific neural mechanisms and laterality remain debated.

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What is prosopagnosia?4 answersProsopagnosia, also known as "face blindness," is the inability to recognize familiar faces. There are two types of prosopagnosia: congenital or developmental prosopagnosia, which is the most common, and acquired prosopagnosia, which can occur due to brain disorders or lesions. It is characterized by the loss of familiarity with previously known faces and the inability to recognize new faces. Prosopagnosia can be caused by lesions in the occipitotemporal zone, particularly in the fusiform face area (FFA) and occipital face area (OFA). Unilateral right occipitotemporal lesions can also lead to persistent prosopagnosia. Prosopagnosia can be a peri-ictal phenomenon, occurring during or after seizures, and can be resolved with surgical resection of the underlying lesion. Stroke is the most common cause of acquired prosopagnosia. Early recognition of prosopagnosia is important for accurate diagnosis and appropriate management.

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