排序方式: 共有130条查询结果,搜索用时 15 毫秒
51.
Genazzani AR Bernardi F Pluchino N Begliuomini S Lenzi E Casarosa E Luisi M 《CNS spectrums》2005,10(6):449-457
The central nervous system is one of the main target tissues for sex steroid hormones, which act on both through genomic mechanisms, modulating synthesis, release, and metabolism of many neuropeptides and neurotransmitters, and through non-genomic mechanisms, influencing electrical excitability, synaptic function, morphological features, and neuron-glia interactions. During the climacteric period, sex steroid deficiency causes many neuroendocrine changes. At the hypothalamic level, estrogen withdrawal gives rise to vasomotor symptoms, to eating behavior disorders, and altered blood pressure control. On the other hand, at the limbic level, the changes in serotoninergic, noradrenergic, and opioidergic tones contribute to the modifications in mood, behavior, and nociception. Hormone replacement therapy (HRT) positively affects climateric depression throughout a direct effect on neural activity and on the modulation of adrenergic and serotoninergic tones and may modulate the decrease in cognitive efficiency observed in climaterium. The identification of the brain as a de novo source of neurosteroids, suggests that the modifications in mood and cognitive performances occurring in postmenopausal women may also be related to a change in the levels of neurosteroids. These findings open new perspectives in the study of the effects of sex steroids on the central nervous system and on the possible use of alternative and/or auxiliary HRT. 相似文献
52.
The present study contributes to the ongoing debate over the extent to which attentive resources are required for emotion
perception. Although fearful facial expressions are strong competitors for attention, we predict that the magnitude of this
effect may be modulated by anxiety. To test this hypothesis, healthy volunteers who varied in their self-reported levels of
trait and state anxiety underwent an attentional blink task. Both fearful and happy facial expressions were subject to a strong
attentional blink effect for low-anxious individuals. For those reporting high anxiety, a blink occurred for both fearful
and happy facial expressions, but the magnitude of the attentional blink was significantly reduced for the fearful expressions.
This supports the proposals that emotion perception is not fully automatic and that anxiety is related to a reduced ability
to inhibit the processing of threat-related stimuli. Thus, individual differences in self-reported anxiety are an important
determinant of the attentional control of emotional processing. 相似文献
53.
Riccardo Chiaradonna 《Topoi》2012,31(2):191-207
This paper focuses on Plotinus?? account of the soul??s cognitive powers of sense perception and discursive thought, with particular reference to the treatises 3. 6 [26], 4. 4 [28] and 5. 3 [49] of the Enneads. Part 1 of the paper discusses Plotinus?? direct realism in perception. Parts 2 and 3 focus on Plotinus?? account of knowledge in Enneads 5. 3 [49] 2?C3. Plotinus there argues that we make judgements regarding how the external world is by means of discursive reasoning. This latter claim, however, is in tension with what Plotinus argues elsewhere regarding our perceptual apprehension of the external world (3. 6 [26] 1; 4. 4 [28] 23). This puzzle is addressed in Part 3 of the paper, which investigates Plotinus?? view that there exist some sense perceptions of which we are unaware. Finally, Part 4 looks at Plotinus?? understanding of Plato??s famous wax block analogy, in 5. 3 (49). The overall conclusion of the paper is that Plotinus?? account of knowledge is radically different from that of the Cartesian tradition. 相似文献
54.
R Fusaroli B Bahrami K Olsen A Roepstorff G Rees C Frith K Tylén 《Psychological science》2012,23(8):931-939
Sharing a public language facilitates particularly efficient forms of joint perception and action by giving interlocutors refined tools for directing attention and aligning conceptual models and action. We hypothesized that interlocutors who flexibly align their linguistic practices and converge on a shared language will improve their cooperative performance on joint tasks. To test this prediction, we employed a novel experimental design, in which pairs of participants cooperated linguistically to solve a perceptual task. We found that dyad members generally showed a high propensity to adapt to each other's linguistic practices. However, although general linguistic alignment did not have a positive effect on performance, the alignment of particular task-relevant vocabularies strongly correlated with collective performance. In other words, the more dyad members selectively aligned linguistic tools fit for the task, the better they performed. Our work thus uncovers the interplay between social dynamics and sensitivity to task affordances in successful cooperation. 相似文献
55.
Riccardo Russo Elaine Fox Lynn Bellinger Dominic P. Nguyen-Van-Tam 《Cognition & emotion》2013,27(4):419-433
The present study evaluated the status of mood-congruent free recall bias in anxious individuals following incidental encoding of target words. In the first experiment, high trait anxiety individuals showed increased recall of threat-related information after an orienting task promoting lexical processing of target words. In a second experiment, both lexical and semantic orienting tasks were performed at study. In this experiment, anxious individuals displayed a mood-congruent recall bias only for target information processed at a lexical level. Theoretical and practical implications of these findings are discussed. 相似文献
56.
Riccardo Russo Dora Whittuck Debi Roberson Kevin Dutton George Georgiou Elaine Fox 《Memory (Hove, England)》2013,21(4):393-399
The status of mood-congruent free recall bias in anxious individuals was evaluated following incidental encoding of target words. Individuals with high and low levels of trait anxiety completed a modified Stroop task, which revealed an attentional bias for threat-related stimuli in anxious individuals. This group was significantly slower in naming the colour in which threat-related words were displayed compared to neutral words. In a subsequent free recall test for the words used in the modified Stroop task, anxious individuals recalled more threat-related words compared to low-anxious people. This difference was significant even when controlling for the false recall of items that had not been presented during study. These results support the view put forward by Russo, Fox, Bellinger, and Nguyen-Van-Tam (2001) that mood-congruent free recall bias in anxious individuals can be observed if the target material is encoded at a relatively shallow level. Moreover, contrary to Dowens and Calvo (2003), the current results show that the memory advantage for threat-related information in anxious individuals is not a consequence of response bias. 相似文献
57.
58.
Lombardi R 《The Psychoanalytic quarterly》2010,79(4):879-909
The author considers sensory perceptions arising from the body to be the first expressions of self-consciousness and mental existence in patients who are overwhelmed by a dimensionless abyss of nothingness. This perspective can help the analyst in catalyzing the patient's integration with his deepest levels of mental functioning. Clinical material from the four-session-per-week analysis of a psychotic patient is discussed. To this analysis and, finding the body meant finding "the land that never was," a "land" that could begin to exist in analysis thanks to a relational working through within the analytic couple. 相似文献
59.
The present study showed that using incidental learning tasks promoting structural/perceptual processing of targets it is possible to obtain a reliable spacing effect for nonwords in a yes/no recognition memory task, whereas no spacing effect is detected for words. These data are, collectively, incompatible with current theories of spacing effects. A theoretical proposal to account for these findings is outlined. 相似文献
60.
Riccardo Lombardi 《Psychoanalytic Dialogues》2013,23(5):629-639
The author discusses the importance of focusing on the body in analytic work since it functions as an important springboard for the patient to discover his or her unique existence. It also helps develop a dialogue between the mind and the body’s sensory level. This is a more archaic domain than the more often emphasized psychoanalytic tradition of organizing our thinking psychosexually. The author also underscores the differences between psychoanalysis and Somatic Experiencing and the risks and advantages of modulating or heightening sensory experience. 相似文献