D'aquí a l'eternitat... a la meva manera

Abstract not availabl

Sleep-Related Hippocampo-Cortical Interplay during Emotional Memory Recollection

Emotional events are usually better remembered than neutral ones. This effect is mediated in part by a modulation of the hippocampus by the amygdala. Sleep plays a role in the consolidation of declarative memory. We examined the impact of sleep and lack of sleep on the consolidation of emotional (negative and positive) memories at the macroscopic systems level. Using functional MRI (fMRI), we compared the neural correlates of successful recollection by humans of emotional and neutral stimuli, 72 h after encoding, with or without total sleep deprivation during the first post-encoding night. In contrast to recollection of neutral and positive stimuli, which was deteriorated by sleep deprivation, similar recollection levels were achieved for negative stimuli in both groups. Successful recollection of emotional stimuli elicited larger responses in the hippocampus and various cortical areas, including the medial prefrontal cortex, in the sleep group than in the sleep deprived group. This effect was consistent across subjects for negative items but depended linearly on individual memory performance for positive items. In addition, the hippocampus and medial prefrontal cortex were functionally more connected during recollection of either negative or positive than neutral items, and more so in sleeping than in sleep-deprived subjects. In the sleep-deprived group, recollection of negative items elicited larger responses in the amygdala and an occipital area than in the sleep group. In contrast, no such difference in brain responses between groups was associated with recollection of positive stimuli. The results suggest that the emotional significance of memories influences their sleep-dependent systems-level consolidation. The recruitment of hippocampo-neocortical networks during recollection is enhanced after sleep and is hindered by sleep deprivation. After sleep deprivation, recollection of negative, potentially dangerous, memories recruits an alternate amygdalo-cortical network, which would keep track of emotional information despite sleep deprivation

Attracting talent through diversity at the top:The impact of TMT diversity and firms' efforts to promote diversity on employer attractiveness

At a time where firms encounter a “race for talent”, it is crucial for many MNCs to present themselves as attractive employers. Failing to position themselves in the international labor market can reduce firms' ability to acquire valuable international human capital, thereby generating disadvantageous organizational effects. Against this backdrop, drawing on signaling theory and employer branding literature, our paper aims to shed light on the association between nationality diversity in the executive suite and MNCs' employer attractiveness. Our lines of argument build on the notion that top management team composition can affect MNCs' efforts to promote diversity among their employees. This focus on diversity, in turn, can affect MNCs' employer attractiveness. Examining firms from various European countries, we find that top management team nationality diversity is positively associated with firms' employer attractiveness for foreign job seekers. We also show that a firm's efforts to promote diversity mediate the relationship between TMT nationality diversity and employer attractiveness. We therefore advance the academic debate on diversity as an employer branding tool and a means to enhance employer attractiveness. In practical terms, we also provide valuable insights for firms wishing to transform into (more) diverse entities.</p

Time-of-day modulation of regional cerebral blood flow response in functional brain imaging studies: a meta-analysis

info:eu-repo/semantics/nonPublishe

Erratum to: Guidelines for the use and interpretation of assays for monitoring autophagy (3rd edition) (Autophagy, 12, 1, 1-222, 10.1080/15548627.2015.1100356

non present