844 research outputs found
Structural connectivity in a single case of progressive prosopagnosia: The role of the right inferior longitudinal fasciculus
No full textProgressive prosopagnosia (PP) is a clinical syndrome characterized by a progressive and selective inability to recognize and identify faces of familiar people. Here we report a patient (G.S.) with PP, mainly related to a prominent deficit in recognition of familiar faces, without a semantic (cross-modal) impairment. An in-depth evaluation showed that his deficit extended to other classes of objects, both living and non-living. A follow-up neuropsychological assessment did not reveal substantial changes after about 1 year. Structural MRI showed predominant right temporal lobe atrophy.
Diffusion tensor imaging was performed to elucidate structural connectivity of the inferior longitudinal fasciculus (ILF) and the inferior fronto-occipital fasciculus (IFOF), the two major tracts that project through the core fusiform region to the anterior temporal and frontal cortices, respectively. Right ILF was markedly reduced in G.S., while left ILF and IFOFs were apparently preserved. These data are in favour of a crucial role of the neural circuit subserved by right ILF in the pathogenesis of PP
Voice-specific proper name anomia (‘phonoanomia’) after bilateral temporal hemorrhagic brain lesions
No full textWe describe a patient who developed bilateral temporal lesions due to a haemorrhagic stroke. One year after onset, he showed marked apperceptive prosopagnosia and could not name people from their voices, although he had spared semantic knowledge about people he could not name and could access this knowledge from people's voice. Importantly, the patient was able to retrieve proper name of persons after their description and was able to name sounds and songs; he could also retrieve proper names of monuments, towns and cartoon characters upon visual presentation. No further relevant cognitive impairment was present. This clinical picture represents the auditory counterpart of prosopanomia and could be defined ‘phonoanomia’. This case report suggests that naming people from their voice implies specific retrieval processes, and pose specific constraints to theoretical models of person recognition
Danger is in the eyes of the beholder: The effect of visible and invisible affective faces on the judgment of social interactions
No full textPrevious studies demonstrated that observation of facial expressions can modulate threat detection while looking at neutral or emotion-related scenes. Similarly, stimuli presented outside conscious awareness could influence social judgments of neutral novel stimuli. The two-fold aim of this study was: i) to evaluate whether observation of seen emotional faces could affect the judgment of social interactions without contextual cues (visible prime condition), and ii) whether this effect could also emerge when the emotional faces were made not visible by means of continuous flash suppression (invisible prime condition). We found that both seen and unseen faces are able to affect the judgment of ambiguous social interactions although this effect was particularly evident when affective faces were clearly visible. The present findings supported the idea that both conscious and unconscious processing of emotional faces have an important role in modulating perceivers' affective state and their judgment of social interactions
Memory biases in Alzheimer’s disease and mild cognitive impairment. A systematic review and metanalysis.
No full text: Several studies demonstrated that individuals are more likely to remember emotional than neutral information; this phenomenon is known as emotional enhancement of memory (EEM). Adults generally tend to remember negative information more efficiently than neutral or positive items. In contrast, healthy elders seem to show an opposite bias for positive information, but results are inconsistent, also because during aging, elaboration of emotional information could change as a consequence of cognitive impairment. In this systematic review and meta-analysis, we conducted literature search of studies investigating emotion memory biases in mild cognitive impairment (MCI) and Alzheimer's disease (AD) on PubMed, Scopus and PsycINFO databases following PRISMA guidelines. The findings showed that emotional memory biases are still present despite the presence of cognitive impairment, both in MCI and at least in early stages of AD. However, the direction of emotion memory biases is not consistent across studies. These results suggest that patients with cognitive impairment might still benefit from EEM and help to define targets of intervention for cognitive rehabilitation in pathological aging
The psychological side of intimate partner violence: A preliminary study on the psycho-physiological correlates in victims women
No full text
Impaired Conscious Recognition of Negative Facial Expressions in Patients with Locked-in Syndrome
No full textThe involvement of facial mimicry in different aspects of human emotional processing is widely debated. However, little is known about
relationships between voluntary activation of facial musculature and conscious recognition of facial expressions. To address this issue,
we assessed severely motor-disabled patients with complete paralysis of voluntary facial movements due to lesions of the ventral pons
[locked-in syndrome (LIS)]. Patients were required to recognize others’ facial expressions and to rate their own emotional responses to
presentation of affective scenes.LISpatientswere selectivelyimpairedin recognition of negativefacial expressions,thusdemonstratingthatthe
voluntary activation of mimicry represents a high-level simulation mechanism crucially involved in explicit attribution of emotions
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