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The functional significance of the N2 in go/no-go tasks was investigated by comparing electrophysiological data obtained from two tasks: a go/no-go task involving both response inhibition as well as response conflict monitoring, and a go/GO task associated with conflict monitoring only. No response was required to no-go stimuli, and a response with maximal force to GO stimuli. The relative frequency of the go stimuli (80% vs. 50%) was varied. The N2 peaked on both no-go and GO trials, with larger amplitudes for both signals when presented in a context of frequent (80%) go signals. These results support the idea that the N2 reflects conflict monitoring not response inhibition. 相似文献
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Children prenatally exposed to maternal anxiety devote more attentional resources to neutral pictures
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Marion I. van den Heuvel Jens Henrichs Franc C.L. Donkers Bea R.H. Van den Bergh 《Developmental science》2018,21(4)
Maternal anxiety during pregnancy can negatively affect fetal neurodevelopment, predisposing the offspring to a higher risk of behavioral and emotional problems later in life. The current study investigates the association between maternal anxiety during pregnancy and child affective picture processing using event‐related brain potentials (ERPs). Mothers reported anxiety during the second trimester using the anxiety subscale of the Symptom Checklist (SCL‐90). At age 4 years, child affective picture processing (N = 86) was measured by recording ERPs during viewing of neutral, pleasant, and unpleasant pictures selected from the International Affective Pictures System. The late positive potential (LPP)—an ERP component reflecting individual differences in affective processing—was used as child outcome. The expected positive association between maternal anxiety and LPP amplitude for unpleasant pictures was not found. Nevertheless, we found a positive association between maternal anxiety during pregnancy and LPP amplitudes for neutral pictures in the middle and late time window at anterior locations (all p < .05). These associations remained significant after adjusting for maternal postnatal anxiety and gestational age at birth and after FDR correction for multiple comparisons. Our study provides neurophysiological evidence that children prenatally exposed to higher maternal anxiety devote more attentional resources to neutral pictures, but not to unpleasant pictures. Possibly, these children show enhanced vigilance for threat when viewing neutral pictures. Although useful in dangerous environments, this enhanced vigilance may predispose children prenatally exposed to higher maternal anxiety to developing behavioral and/or emotional problems later in life. A video abstract of this article can be viewed at: https://www.youtube.com/watch?v=kEzYi6IS2HA 相似文献
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Paola Hasbún López Borja Martinović Magdalena Bobowik Xenia Chryssochoou Aleksandra Cichocka Andreea Ernst-Vintila Renata Franc Éva Fülöp Djouaria Ghilani Arshiya Kochar Pia Lamberty Giovanna Leone Laurent Licata Iris Žeželj 《European journal of social psychology》2019,49(7):1439-1455
To understand recent anti-refugee protests in Europe, we examined how different levels of inclusiveness of group identities (national, European, and global) are related to intentions to protest among native Europeans. We focused on the mediating role of autochthony (a belief that the first inhabitants of a territory are more entitled) and the moderating role of threat. Survey data from 11 European countries (N = 1,909) showed that national identification was positively associated with autochthony, and therefore, with the intention to protest against refugees. In contrast, global identification was related to lower protest intentions via lower autochthony. These paths were found only among Europeans who perceived refugees as a threat. European identification was not related to the endorsement of autochthony or to collective action. These findings indicate why and when majority members are willing to participate in collective action against refugees, and underscore the importance of global identification in the acceptance of refugees. 相似文献
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Ragnar Francén 《The Journal of Ethics》2010,14(2):117-148
Motivational externalists and internalists of various sorts disagree about the circumstances under which it is conceptually
possible to have moral opinions but lack moral motivation. Typically, the evidence referred to are intuitions about whether
people in certain scenarios who lack moral motivation count as having moral opinions. People’s intuitions about such scenarios
diverge, however. I argue that the nature of this diversity is such that, for each of the internalist and externalist theses, there is a strong prima facie reason to reject it. That much might not be very
controversial. But I argue further, that it also gives us a strong prima facie reason to reject all of these theses. This is possible since there is an overlooked alternative option to accepting any of them: moral motivation pluralism, the view that different internalist and externalist theses correctly accounts for different people’s concepts of moral opinions, respectively. I
end the paper with a discussion of methodological issues relevant to the argument for moral motivation pluralism and of the
consequences of this view for theories about the nature of moral opinions, such as cognitivism and non-cognitivism. 相似文献
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Franc Mali 《Nanoethics》2018,12(1):61-73
Synthetic biology (SB) is rather a new field of science and technology. Societal, regulatory, legal, ethical, safety and security aspects of this field have already been analysed in much detail and discussed very widely in recent years. There is, however, a dearth of empirical studies on the points of view of relevant stakeholders in countries where SB is still in the process of emergence. Slovenia is one of them, and accordingly, the article analyses the situation of SB in this small country, focusing on the points of view of various stakeholder groups concerning three aspects of SB: the policy framework, the ethical-legal discourse and the issues of biosafety and biosecurity. It is argued that Slovenia has missed many opportunities to foster the domestic development of the field; in particular, considering that at an early stage, young Slovenian researchers participated very successfully in the International Genetically Engineered Machine (iGEM) competition. 相似文献
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Encoding, consolidation, and retrieval of contextual memory: differential involvement of dorsal CA3 and CA1 hippocampal subregions
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Daumas S Halley H Francés B Lassalle JM 《Learning & memory (Cold Spring Harbor, N.Y.)》2005,12(4):375-382
Studies on human and animals shed light on the unique hippocampus contributions to relational memory. However, the particular role of each hippocampal subregion in memory processing is still not clear. Hippocampal computational models and theories have emphasized a unique function in memory for each hippocampal subregion, with the CA3 area acting as an autoassociative memory network and the CA1 area as a critical output structure. In order to understand the respective roles of the CA3- and CA1-hippocampal areas in the formation of contextual memory, we studied the effects of the reversible inactivation by lidocaine of the CA3 or CA1 areas of the dorsal hippocampus on acquisition, consolidation, and retrieval of a contextual fear conditioning. Whereas infusions of lidocaine never impaired elementary tone conditioning, their effects on contextual conditioning provided interesting clues about the role of these two hippocampal regions. They demonstrated first that the CA3 area is necessary for the rapid elaboration of a unified representation of the context. Secondly, they suggested that the CA1 area is rather involved in the consolidation process of contextual memory. Third, they showed that CA1 or CA3 inactivation during retention test has no effect on contextual fear retrieval when a recognition memory procedure is used. In conclusion, our findings point as evidence that CA1 and CA3 subregions of the dorsal hippocampus play important and different roles in the acquisition and consolidation of contextual fear memory, whereas they are not required for context recognition. 相似文献
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The article examines the role played by policy advice institutions in the governance of ethically controversial new and emerging science and technology in Europe. The empirical analysis, which aims to help close a gap in the literature, focuses on the evolution, role and functioning of national ethics advisory bodies (EABs) in Europe. EABs are expert bodies whose remit is to issue recommendations regarding ethical aspects of new and emerging science and technology. Negative experiences with the impacts of science and technology in the past have resulted in calls for increased transparency and broader participation and pluralism in expert advice and policy decision-making. Do national EABs function as inclusive, anticipatory “hybrid forums”? Or do they resemble more “classical” expert-oriented bodies, inspired by technocratic or decisionist approaches? As part of the empirical analysis of the role and functioning of institutional ethical advisory structures in 32 European countries, an extensive analysis of EAB websites and the content of publicly available documents on such institutions has been carried out, supplemented by an online survey of representatives of the EABs. One major finding of the empirical analysis is the very uneven distribution of “hybrid forum” features of EABs across Europe. 相似文献
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Ragnar Francén 《Philosophical Studies》2010,151(1):19-37
Recently a number of writers have argued that a new form of relativism involves a form of semantic context-dependence which
helps it escape the perhaps most common objection to ordinary contextualism; that it cannot accommodate our intuitions about
disagreement. I argue: (i) In order to evaluate this claim we have to pay closer attention to the nature of our intuitions
about disagreement. (ii) We have different such intuitions concerning different questions: we have more stable disagreement
intuitions about moral disputes than about, say, disputes about matters of taste. (iii) The new form of relativism does not
vindicate the stable intuitions about disagreement. (iv) It does a better job explaining the unstable intuitions than contextualism.
But, pace some relativists, it is not clear that assertion-truth rather than just proposition-truth has to be relativized
to accomplish this. 相似文献
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