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221.
Claudia A F Wascher Walter Arnold Kurt Kotrschal 《Journal of comparative psychology (Washington, D.C. : 1983)》2008,122(1):100-107
Physical activity is generally considered as most relevant for modulating heart rate (HR). The authors show here that HR is not only modulated by physical activity but even more by social contexts. HR modulation in three free-ranging, socially embedded, male greylag geese fitted with implanted radiotransmitters was investigated. Measured HR ranged from 40 beats per minute (bpm) during rest to a maximum over 400 bpm during takeoff. Almost the same maximum HRs (400 bpm) were reached during social interactions, which however, generally require less bodily action. Mean HR during social interactions (agonistic interactions, vocalizations) was significantly higher than during behaviors with a less obvious social context (e.g., resting, comfort or feeding behavior), but with comparable physical activity involved. The authors also found significant and consistent differences in HR between the three focal individuals, probably because of individual behavioral phenotype. Our results show that social context has a strong modulatory effect on the sympathico-adrenergic activity in a social bird and conclude that particularly the latter may pose considerable energetic costs. (PsycINFO Database Record (c) 2008 APA, all rights reserved). 相似文献
222.
Nicola S. Schutte John M. Malouff Ian Price Samantha Walter Greg Burke Catherine Wilkinson 《Current Psychology》2008,27(2):102-111
Two studies applied a person–situation model to examine the effect of emotional affordances of situations. Participants rated
their emotional functioning as more extensive in situations classified as being high in emotional affordance than those classified
as low in emotional affordance. Participants who scored higher on the individual difference characteristic of emotional intelligence
were more interested in entering high emotional affordance situations than were individuals lower in emotional intelligence,
and participants who scored higher on emotional intelligence were rated by others as being more successful in high emotional
affordance situations than individuals lower in emotional intelligence. These results provide preliminary evidence that the
interaction between emotional intelligence and situations may influence emotional functioning. 相似文献
223.
The authors examined the ability of older adults to modify their search strategies to detect changes in dynamic displays. Older adults who made few eye movements during search (i.e., covert searchers) were faster and more accurate compared with individuals who made many eye movements (i.e., overt searchers). When overt searchers were instructed to adopt a covert search strategy, target detection performance increased to the level of natural covert searchers. Similarly, covert searchers instructed to search overtly exhibited a decrease in target detection performance. These data suggest that with instructions and minimal practice, older adults can ameliorate the cost of a poor search strategy. 相似文献
224.
I reply to comments by Gerry Hough, Peter Baumann and Martijn Blaauw on my book Moral Skepticisms . The main issues concern whether modest justifiedness is epistemic and how it is related to extreme justifiedness; how contrastivists can handle crazy contrast classes, indeterminacy and common language; whether Pyrrhonian scepticism leads to paralysis in decision-making or satisfies our desires to evaluate beliefs as justified or not; and how contextualists can respond to my arguments against relevance of contrast classes. 相似文献
225.
Items from the Emotional Support Subscale of the Bosch Support Measure were administered in a small survey of 56 formerly abused rural women in the midwestern USA. Maximum likelihood factor analyses were performed on a total of 21 items. A 5-factor solution appeared to produce the best results, but only 3 factors suggested viable subscales with Cronbach alphas greater than .80. Informal support networks in the rural areas studied here appeared to provide survivors of domestic violence with general emotional support to a greater extent than guidance on accessing professional resources and help. 相似文献
226.
Pieters GL de Bruijn ER Maas Y Hulstijn W Vandereycken W Peuskens J Sabbe BG 《Brain and cognition》2007,63(1):42-50
To study action monitoring in anorexia nervosa, behavioral and EEG measures were obtained in underweight anorexia nervosa patients (n=17) and matched healthy controls (n=19) while performing a speeded choice-reaction task. Our main measures of interest were questionnaire outcomes, reaction times, error rates, and the error-related negativity ERP component. Questionnaire and behavioral results indicated increased perfectionism in patients with anorexia nervosa. In line with their perfectionism and controlled response style patients made significantly less errors than controls. However, when controlling for this difference in error rates, the EEG results demonstrated a reduced error-related negativity in the patient group. These seemingly contradictory outcomes of improved performance and reduced error monitoring are discussed in relation with indications of anterior cingulate cortex hypoactivity in anorexia nervosa patients. 相似文献
227.
Walter G. Sannita 《Cognitive processing》2009,10(1):17-22
A major issue in today’s neuroscience is how the brain complex and highly flexible organization emerges from its individual components. Robustness of neuronal properties with weak linkages between regulatory processes are suggested to account for the adaptive, tunable, multistable dynamics, the coding schemes and the complexity of neuronal functional (sub)systems. Interneurons and neurotransmitter diversity, resonance phenomena due to properties of the cell or network, time/frequency-dependent activation of dedicated neuronal assemblies, code- and frequency-specific oscillations interact in determining the brain functional setup and operations. Despite the scientific relevance, comprehensive theories are not yet available, but the scenario—however incomplete and incompletely characterized—is promising and warrants further investigation. 相似文献
228.
229.
Dirk Hagemann Johannes Hewig Christoph Walter Andrea Schankin Daniel Danner Ewald Naumann 《Personality and individual differences》2009,47(7):717-721
Eysenck’s arousal hypothesis suggests that introverts have greater cortical activity than extraverts. This prediction was tested in several studies that used the electroencephalogram (EEG) alpha activity to index cortical arousal, but empirical findings are inconsistent. Possibly, external factors of the measurement situation or static factors such as skull thickness may act as nuisance variables on alpha activity and thus mitigate the relation between arousal and extraversion. The aim of the present study was to test the arousal hypothesis with a focus on these methodological issues. Resting EEG was acquired on several occasions of measurement, skull thickness was quantified with anatomical magnetic resonance imaging (MRI), and extraversion was assessed by questionnaire. There was a positive association between alpha activity and extraversion, which was neither affected by external factors nor by skull thickness. This finding is in line with the arousal hypothesis and suggests that external or static factors do not contribute to the inconsistency of empirical findings. 相似文献
230.