Transcranial Doppler sonography (TCD) enables monitoring of blood flow velocities (BFVs) in basal cerebral arteries during different cognitive tasks performance with great temporal resolution. So far, BFVs changes during mental activity were monitored primarily in middle cerebral arteries (MCAs) and little is known about these changes in anterior cerebral arteries (ACAs).
Aim
To determine the effect of different cognitive tasks performance on BFV changes and hemispheric dominance in ACAs and to assess the most suitable activation test for monitoring of BFV changes in ACAs.
Methods
Fourteen right-handed, healthy subjects aged 20–26 were included in the study. BFVs in both ACAs were recorded simultaneously during performance of cognitive tasks designed to activate frontal lobes: phonemic verbal fluency test (pVFT), Stroop tests and Trail Making Tests (TMTs).
Results
A statistically significant BFV increase was recorded in both ACAs during performance of all cognitive tasks. Statistically significant right ACA dominance was found during performance of pVFT and TMTB. The most significant BFV increase was obtained during performance of TMTB.
Conclusion
Our result addressed cognitive tests with great activation potential for monitoring of ACAs that might be used in distinguishing of healthy individuals and patients with neurovascular or neurodegenerative diseases. 相似文献
We analyzed data from 87 mothers of children ages 15 to 44 months with cerebral palsy (CP) or no diagnosis, who completed the Dyadic Adjustment Scale, Parenting Stress Index, Support Functions Scale, and Inventory of Social Support. Principal components analysis of the 15 subscales from the 5 measures revealed few cross-measure loadings. Mothers of children with CP (severe or mild) reported higher levels of parenting stress than did mothers of controls. However, cluster analysis of self-report measures yielded a 5-cluster solution, with no diagnostic group differences across clusters. That is, there were no overall differences in self-reported family functioning according to presence or severity of the child's disability. The results are discussed in terms of the organization of family systems and their relationship to child diagnosis. Clinical implications for assessing and working with families are noted. 相似文献
Background: The aim of this paper is to shed light on the notion of fear and inter-personal working relationships, and to promote safe midwifery practice, by critically reflecting on our practice and being aware of fear appeals and the protection motivation theory (PMT).
Theory: PMT provides a general account of the impact of persuasive communication, emphasising the cognitive processes that mediate behaviour change and questions whether ‘fear appeals’ could influence behaviour. Discussion: It is possible that when a midwife decides on a particular care pathway, she determines the degree and perception of the four elements of the PMT; severity, vulnerability, response-efficacy and self-efficacy. If the midwife decides that both the degree of severity and her perception of vulnerability are high, whereas response and self-efficacy perceptions are low, she will probably decide against her original care pathway. For the PMT to be used safely, an appropriate judgement call is required and is based on full understanding of the situation, effective communication with the multidisciplinary team, full knowledge of the proposed care, and competence and confidence in the proposed care. Conclusion: By critically reflecting on their practice and using the PMT, the author believes that midwives will be able to work in partnership with obstetricians to provide safe and effective care within their sphere of practice and in the absence of fear. 相似文献
Aboriginal youth are highly overrepresented within the child welfare system. High-risk youth are often placed in out-of-community residential placements. Such residential placements have been described by some as a continuation of colonial practices. Using communication theory as a conceptual model, we propose a qualitative analysis of micro-interactions that take place between Aboriginal youth and non-Aboriginal workers during the management of high-risk behaviors within a residential program. Three broad categories of interaction emerge from the data: complementary, symmetrical/complementary (where youth show a form of submission despite resistance), and symmetrical (characterized by a power struggle). Despite the diversity of interactions along this symmetrical to complementary continuum, interventions always start and finish in the same fashion. Moreover, the nature of interactions depended mostly on how quickly youth accepted the consequences of their behaviors. We also extracted five categories related to culture, race or context that are perceived as influencing the interactions that take place between staff and youth. The analysis of micro-interactions within clinical, organizational, social and historical contexts points to mechanisms by which asymmetrical power relations may be replicated on a day-to-day basis despite the best intentions of residential workers. 相似文献
High-quality group psychotherapy training is seen as more important than ever in the current health care environment. The training opportunities available at present are assessed. It is argued that there is a body of knowledge about generic group psychotherapy that can and should be taught, and that there are appropriate people to teach it. Credentialing is discussed, and it is suggested that the assessment of actual work in clinical situations must be emphasized if such efforts are to be meaningful. 相似文献