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41.
Remembering the past and envisioning the future are at the core of one's sense of identity. Neuroimaging studies investigating the neural substrates underlying past and future episodic events have been growing in number. However, the experimental paradigms used to select and elicit episodic events vary greatly, leading to disparate results, especially with respect to the laterality and antero-posterior localization of hippocampal and adjacent medial temporal activations (i.e., parahippocampal, entorhinal and perirhinal cortices, amygdala). Although a central concern in today's literature, the issue of hippocampal and medial temporal lobe laterality and antero-posterior segregation in past and future episodic events has not yet been addressed extensively. Using the activation likelihood estimation (ALE) procedure (Turkeltaub, Eden, Jones, & Zeffiro, 2002), we performed a meta-analysis of hippocampal and adjacent medial temporal coordinates extracted from neuroimaging studies examining past remembering and future envisioning. We questioned whether methodological choices could influence the laterality of activations, namely (1) the type of cue used (generic vs. specific), (2) the type of task performed (recognition vs. recall/imagine), (3) the nature of the information retrieved (episodic vs. "strictly" episodic events) and (4) the age of participants. We consider "strictly" episodic events as events which are not only spatio-temporally unique and personal like episodic events, but are also associated with contextual and phenomenological details. These four factors were compared two-by-two, generating eight whole-brain statistical maps. Results indicate that (1) specific cues tend to activate more the right anterior hippocampus compared to the use of generic cues, (2) recall/imagine tasks tend to recruit more the left posterior parahippocampal gyrus compared to recognition tasks, (3) (re/pre)experiencing strictly episodic events tends to activate more the bilateral posterior hippocampus compared to episodic events and (4) older subjects tend to activate more the right anterior hippocampus compared to younger subjects. Importantly, our results stress that strictly episodic events triggered by specific cues elicit greater left posterior hippocampal activation than episodic events triggered by specific cues. These findings suggest that such basic methodological choices have an impact on the conclusions reached regarding past and future (re/pre)experiencing and their neural substrates. 相似文献
42.
Heather J. Gordon Evangelia Demerouti Tanja Bipp Pascale M. Le Blanc 《European Journal of Work and Organizational Psychology》2013,22(1):44-58
This study explores the effects of nurses’ daily job characteristics (i.e., job demands and resources) and general work engagement on their daily decision making (i.e., analytical and intuitive) and consequently their daily performance (i.e., task and contextual). Participants completed a baseline questionnaire and a diary for five consecutive days. Results reveal a positive influence of the job demands “work pressure” and “predictability” on analytical decision making. In turn, analytical decision making promotes task performance. Work pressure also negatively influences intuitive decision making which, in turn, stimulates task and contextual performance. However, the job resource (i.e., autonomy) had a nonsignificant relationship with decision making. General work engagement had positive effects on analytical decision making and moderated the relationship between intuitive decision making and contextual performance. For those high on work engagement, the relation was stronger compared to their counterparts low on work engagement. Results corroborate that expanding and testing decision-making theories can increase understanding on how the work environment and engagement influence employee decision making and performance. 相似文献
43.
Two priming experiments using a perceptual identification task were conducted to explore the functional and representational overlap between visual imagery and visual perception. The first experiment included a study phase in which primes were either perceived or imaged objects and a perceptual identification test task in which targets were parts of studied and non-studied objects. Imagery primed identification when subjects were instructed to count the parts of the imaged objects in the study phase but not when they were instructed to focus on the global shape of the imaged objects. This result suggests that imagery involves perceptual representations identical to those involved in perception. It also suggests that the representational overlap between imagery and perception depends on the type of images generated, as some images may consist in global shapes only, whereas others may consist in detailed, multi-part shapes. In the second experiment, we used whole objects as target stimuli which provided subjects with more information to identify masked targets and thereby reduced top-down processing. Priming from imagery fell beneath significance, suggesting that this sort of priming is elicited in a large part by a transfer of top-down processes from study to test. 相似文献
44.
Anger may be more responsive than disgust to mitigating circumstances in judgements of wrongdoing. We tested this hypothesis in two studies where we had participants envision circumstances that could serve to mitigate an otherwise wrongful act. In Study 1, participants provided moral judgements, and ratings of anger and disgust, to a number of transgressions involving either harm or bodily purity. They were then asked to imagine and report whether there might be any circumstances that would make it all right to perform the act. Across transgression type, and controlling for covariance between anger and disgust, levels of anger were found to negatively predict the envisioning of mitigating circumstances for wrongdoing, while disgust was unrelated. Study 2 replicated and extended these findings to less serious transgressions, using a continuous measure of mitigating circumstances, and demonstrated the impact of anger independent of deontological commitments. These findings highlight the differential relationship that anger and disgust have with the ability to envision mitigating factors. 相似文献
45.
Luca Latini-Corazzini Marie Pascale Nesa Mathieu Ceccaldi Eric Guedj Catherine Thinus-Blanc Franco Cauda Federico Dagata Patrick Péruch 《Psychological research》2010,74(6):545-559
We investigated the characteristics of route and survey processing of a unique complex virtual environment both at the behavioral
and brain levels. Prior to fMRI scanning, participants were trained to follow a route and to learn the spatial relationships
between several places, acquiring both route and survey knowledge from a ground-level perspective. During scanning, snapshots
of the environment were presented, and participants were required to either indicate the direction to take to follow the route
(route task), or to locate unseen targets (survey task). Data suggest that route and survey processing are mainly supported
by a common occipito-fronto-parieto-temporal neural network. Our results are consistent with those gathered in studies concerning
the neural bases of route versus survey knowledge acquired either from different perspectives or in different environments.
However, rather than arguing for a clear distinction between route and survey processing, “mixed” strategies are likely to
be involved when both types of encoding take place in the same environment. 相似文献
46.
Four experiments conducted in French were performed to investigate the role of grammatical congruency and vocabulary class on lexical decision times. In Experiment 1, using a double lexical decision, slower reaction times were found for pairs of words that disagreed in gender or number than for congruent pairs. Experiments 2, 3, and 4 tested this effect with a standard priming procedure. The grammatical congruency effect varied according to presentation times (130, 150, or 500 msec) and to vocabulary class of context word (closed or open). Closed-class context words induced stronger grammatical effect than did open-class words. These results suggest that the grammatical link existing between the two words of a pair is more immediately computed when the first one is a closed-class item and argue for a distinct computational role of open- and closed-class words in sentence processing. 相似文献
47.
Age effects on different components of theory of mind 总被引:1,自引:0,他引:1
Céline Duval Pascale Piolino Alexandre Bejanin Francis Eustache Béatrice Desgranges 《Consciousness and cognition》2011,20(3):627-642
The effects of aging on the cognitive and affective dimensions of theory of mind (ToM), and on the latter’s links with other cognitive processes, such as information processing speed, executive functions and episodic memory, are still unclear. We therefore investigated these effects in young (n = 25), middle-aged (n = 20) and older adults (n = 25), using separate subjective and objective assessment tasks. Furthermore, a novel composite task probed participants’ abilities to infer both cognitive and affective mental states in an interpersonal context. Although age affected the objective ToM tests, results revealed a direct aging effect on the second-order ToM, but an indirect one on the first-order cognitive ToM, mediated mainly by age-related declines in executive functions. This study supports the notion of an age-related distinction between subjective and objective assessments of ToM, and confirms that ToM is a complex mental ability with several characteristics reliant to some extent on executive processes. 相似文献
48.
Pascale Hugon 《Argumentation》2008,22(1):93-114
The works of the Tibetan logician Phya pa Chos kyi seng ge (1109–1169) make abundant use of a particular type of argument
that I term ‘argument by parallels’. Their main characteristic is that the instigator of the argument, addressing a thesis
in a domain A, introduces a parallel thesis in an unrelated domain B. And in the ensuing dialogue, each of the instigator’s
statements consists in replicating his interlocutor’s previous assertion, mutatis mutandis, in the other domain (A or B). I show that such a dialogue involves two parallel arguments that develop in an intersecting
zigzag pattern, and discuss the principles involved in the establishment of the conclusion from the perspective of parity
of reasoning and analogical argument. I examine the overall rhetorical strategy directing the use of arguments by parallels
and the pedagogical and explanatory functions they can serve. I also evaluate the plausibility of their use in Phya pa Chos
kyi seng ge’s works mirroring a contemporary practice of oral debate, and reflect on the status of such arguments in the framework
of Indo-Tibetan logic.
相似文献
Pascale HugonEmail: |
49.
Can listeners entrain to speech rhythms? Monolingual speakers of English and French and balanced English–French bilinguals tapped along with the beat they perceived in sentences spoken in a stress-timed language, English, and a syllable-timed language, French. All groups of participants tapped more regularly to English than to French utterances. Tapping performance was also influenced by the participants’ native language: English-speaking participants and bilinguals tapped more regularly and at higher metrical levels than did French-speaking participants, suggesting that long-term linguistic experience with a stress-timed language can differentiate speakers’ entrainment to speech rhythm. 相似文献
50.
Dallérac G Zerwas M Novikova T Callu D Leblanc-Veyrac P Bock E Berezin V Rampon C Doyère V 《Learning & memory (Cold Spring Harbor, N.Y.)》2011,18(5):306-313
The neural cell adhesion molecule (NCAM) is known to play a role in developmental and structural processes but also in synaptic plasticity and memory of the adult animal. Recently, FGL, a NCAM mimetic peptide that binds to the Fibroblast Growth Factor Receptor 1 (FGFR-1), has been shown to have a beneficial impact on normal memory functioning, as well as to rescue some pathological cognitive impairments. Whether its facilitating impact may be mediated through promoting neuronal plasticity is not known. The present study was therefore designed to test whether FGL modulates the induction and maintenance of synaptic plasticity in the dentate gyrus (DG) in vivo. For this, we first assessed the effect of the FGL peptide on synaptic functions at perforant path-dentate gyrus synapses in the anesthetized rat. FGL, or its control inactive peptide, was injected locally 60 min before applying high-frequency stimulation (HFS) to the medial perforant path. The results suggest that although FGL did not alter basal synaptic transmission, it facilitated both the induction and maintenance of LTP. Interestingly, FGL also modified the heterosynaptic plasticity observed at the neighboring lateral perforant path synapses. The second series of experiments, using FGL intracerebroventricular infusion in the awake animal, confirmed its facilitating effect on LTP for up to 24 h. Our data also suggest that FGL could alter neurogenesis associated with LTP. In sum, these results show for the first time that enhancing NCAM functions by mimicking its heterophilic interaction with FGFR facilitates hippocampal synaptic plasticity in the awake, freely moving animal. 相似文献