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41.
In the first study, eye and lip size and roundness, and lower-face roundness were compared between a control sample of 289 photographic portraits and an experimental sample of 776 artistic portraits covering the whole period of the history of art. Results showed that eye roundness, lip roundness, eye height, eye width, and lip height were significantly enhanced in artistic portraits compared to photographic ones. Lip width and lower-face roundness, on the contrary, were less prominent in artistic than in photographic portraits. In a second study, forty-two art academy students were requested to draw two self-portraits, one with a mirror and one without (from memory). Eye, lip, and lower-face roundness in artistic self-portraits was compared to the same features derived from photographic portraits of the participants. The results obtained confirmed those found in the first study. Eye and lip size and roundness were greater in artistic self-portraits, while lower-face roundness was significantly reduced. The same degree of modification was found also when a mirror was available to the subjects. In a third study the effect of lower-face roundness on the perception of attractiveness was assessed: fifty-three participants had to adjust the face width of 24 photographic portraits in order to achieve the highest level of attractiveness. Participants contracted the face width by a mean value of 5.26%, showing a preference for a reduced lower-face roundness. All results are discussed in terms of the importance of the 'supernormalisation' process as a means of assigning aesthetic value to perceptual stimuli. 相似文献
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Dapporto L Turillazzi S Palagi E 《Journal of comparative psychology (Washington, D.C. : 1983)》2006,120(4):394-400
The idea that insects play has often aroused skepticism. Nevertheless, the authors investigated the occurrence of a playlike behavior in young individuals of a paper wasp. Polistes dominulus foundresses hibernate in aggregations and found associative nests in the spring. In aggregations, wasps exhibit most of the rank-dependent behaviors that they will use in the nest 6 months later. In aggregations, precocious dominance interactions are performed with exaggerated frequencies, whereas aggression and trophallaxis are rare. Dominance behavior in aggregations is apparently useless, but it probably allows wasps to assess their dominance potential without any apparent reproductive competition. Surprisingly, these interactions may be best interpreted as play because dominance behavior in aggregations shares several features with mammalian play fighting. 相似文献
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de Vasconcellos AP Zugno AI Dos Santos AH Nietto FB Crema LM Gonçalves M Franzon R de Souza Wyse AT da Rocha ER Dalmaz C 《Neurobiology of learning and memory》2005,84(2):102-110
This study was undertaken to verify the effects of chronic stress and lithium treatments on the hippocampal Na+,K(+)-ATPase activity of rats, as well as to investigate the effects of stress interruption and post-stress lithium treatment on this enzyme activity and on spatial memory. Two experiments were carried out; in the first experiment, adult male Wistar rats were divided into two groups: control and submitted to a chronic variate stress paradigm, and subdivided into treated or not with LiCl. After 40 days of treatment, rats were killed, and Na+,K(+)-ATPase activity was determined. In the second experiment, rats were stressed during 40 days, and their performance was evaluated in the Water Maze task. The stressed group was then subdivided into four groups, with continued or interrupted stress treatment and treated or not with lithium for 30 additional days. After a second evaluation of performance in the Water Maze, rats were killed and Na+,K(+)-ATPase activity was also measured. Results showed an impairment in Na+,K(+)-ATPase activity and in Water Maze performance of chronically stressed rats, which were prevented by lithium treatment and reversed by lithium treatment and by stress interruption. These results suggest that the modulation of Na+,K(+)-ATPase activity may be one of the mechanisms of action of lithium in the treatment of mood disorders. 相似文献
44.
Laura Serra Giulia Bechi Gabrielli Carlotta Di Domenico Chiara Del Bono Camillo Marra Leonardo Lopiano Carlo Caltagirone Marco Bozzali 《Journal of Neuropsychology》2023,17(1):63-80
Prefrontal functions subserve inhibition control for retrieval of semantically related items inducing forgetting 19 a-MCI patients and 29 controls underwent neuropsychological evaluation and retrieval-practice paradigm (RPP) to estimate baseline remember (BR), retrieval-induced facilitation (FAC) and retrieval-induced forgetting (RIF). A-MCI patients underwent also 3 T-MRI to assess relationship between regional grey matter (rGM) volumes and RPP indexes Behaviourally, RIF and FAC were both observed controls, while RIF only was observed in a-MCI patients. In patients but not in controls, RIF was associated with cognitive efficiency and FAC with memory performance. Patients showed also associations between BR and rGM volumes in the precuneus, no association was found between rGM volumes and RIF and FAC. A-MCI patients did not benefit from repeated practice during retrieval of studied items, which is likely due to their memory disorder. In contrast, patient cognitive efficiency would drive retrieval suppression of interfering stimuli. 相似文献
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The impact of the new wine common market organization (CMO) on behavioural loyalty towards product attributes: A case from Italy
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Armando Maria Corsi Sarah Rann Overton Leonardo Casini 《Journal of Consumer Behaviour》2014,13(4):231-241
This paper explores the changes in consumers' loyalty towards wine after the launch of the new common market organization (CMO) (European Council Regulation (EC) No. 479/2008) in 2008. The analysis of wine purchases in the AC Nielsen Consumer Panel in 2009 and 2010 was compared to analogous work conducted in 2003–2005 and 2006–2008. Loyalty towards wine attributes— price, quality designation and packaging format—was measured using standard brand performance measures together with a newer metric, the polarization index, which has not been used before to highlight or explain the factors behind shifts in loyalty. The analysis revealed that post‐CMO reform increases in consumer loyalty towards the following: (i) standard 0.75‐L wine bottles; (ii) quality‐classified, protected designation of origin wines; and (iii) higher‐price‐point wines. The paper elaborates these findings, explaining how changes in consumers' loyalty patterns can be used to quantify the success of recent policy changes, which can be tracked in a reasonably short time frame thanks to the polarization index. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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Leonardo Fernandino Lisa L. ConantJeffrey R. Binder Karen BlindauerBradley Hiner Katie SpanglerRutvik H. Desai 《Brain and language》2013
The problem of how word meaning is processed in the brain has been a topic of intense investigation in cognitive neuroscience. While considerable correlational evidence exists for the involvement of sensory-motor systems in conceptual processing, it is still unclear whether they play a causal role. We investigated this issue by comparing the performance of patients with Parkinson’s disease (PD) with that of age-matched controls when processing action and abstract verbs. To examine the effects of task demands, we used tasks in which semantic demands were either implicit (lexical decision and priming) or explicit (semantic similarity judgment). In both tasks, PD patients’ performance was selectively impaired for action verbs (relative to controls), indicating that the motor system plays a more central role in the processing of action verbs than in the processing of abstract verbs. These results argue for a causal role of sensory-motor systems in semantic processing. 相似文献
50.
Alessandra M. Ribeiro Flávio F. BarbosaMonique R. Godinho Valéria S. FernandesHermany Munguba Thieza G. MeloMarla T. Barbosa Raí A. EufrasioAlícia Cabral Geison S. IzídioRegina H. Silva 《Brain and cognition》2010
Studies usually show better spatial learning in males and stronger emotional memory in females. Spatial memory differences could relate to diverse strategies, while dissimilar stress reactions could cause emotional memory differences. We compared male and female rats in two emotional (classical emotional conditioning and aversive discrimination memory) and two emotionally “neutral” tasks: (1) plus-maze discriminative avoidance, containing two open and two enclosed arms, one of which presenting aversive stimuli (light/noise). No differences were found in learning, retrieving, or basal emotional levels, while only male rats presented extinction of the task; (2) contextual fear conditioning – a cage was paired to mild foot shocks. Upon reexposure, freezing behavior was decreased in females; (3) spontaneous alternation – the animals were expected to alternate among the arms of a four-arm maze. No differences between genders were found and (4) open-field habituation was addressed in an arena which the rats were allowed to explore for 10 min. Habituation was similar between genders. Differences were found only in tasks with strong emotional contexts, where different fear responses and stress effects could be determinant. The lack of extinction of discriminative avoidance by females points out to stronger consolidation and/or impaired extinction of aversive memories. 相似文献