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91.
Habituation is a form of non-associative memory that plays an important role in filtering stable or redundant inputs. The present study examines the contribution of habituation and cortical adaptation to odor-background segmentation. Segmentation of target odorants from background odorants is a fundamental computational requirement for the olfactory system. Recent electrophysiological data have shown that odor specific adaptation in piriform cortex neurons, mediated at least partially by synaptic adaptation between the olfactory bulb outputs and piriform cortex pyramidal cells, may provide an ideal mechanism for odor-background segmentation. This rapid synaptic adaptation acts as a filter to enhance cortical responsiveness to changing stimuli, while reducing responsiveness to static, potentially background stimuli. Using previously developed computational models of the olfactory system, we here show how synaptic adaptation at the olfactory bulb input to the piriform cortex, as demonstrated electrophysiologically, creates odor specific adaptation. We show how this known feature of olfactory cortical processing can contribute to adaptation to a background odor and to odor-background segmentation. We then show in a behavioral experiment that the odor-background segmentation is perceptually important and functions at the same time-scale as the synaptic adaptation observed between the olfactory bulb and cortex. 相似文献
92.
Dr. med. Christiane Hornstein Dipl.-Psych. Erika Hohm Dr. Dipl.-Psych. Patricia Trautmann-Villalba 《Forensische Psychiatrie, Psychologie, Kriminologie》2009,3(1):3-10
Background
The effectiveness of preventive approaches in the field of child protection depends, amongst other things, upon identifying typical risk constellations of infanticide. Postpartum bonding disorder, a disorder affecting a mother’s emotional relationship with her child, is one of those risk constellations alongside other negative consequences to child development. It frequently accompanies postpartum depression, which is determined by other emotional qualities. The therapeutic response is a determinant factor for the success of preventive measures.Method
42 mothers with postpartum disorders (25 depressive, 17 schizophrenic) undergoing treatment at a mother-baby-unit were examined for bonding disorders and the therapeutic response, primarily regarding the mother-child relationship. Perception of bonding, maternal self-efficacy and objectively measured parameters of mother-child interaction were the most important parameters assessed. Results. Nearly 60% of the mothers suffered from a bonding disorder. Overall, the results indicated a clear improvement in psychiatric disorder as well as in the assessed parameters for the mother-child relationship and the experience of motherhood.Conclusions.
Maternal bonding disorders are strongly associated with postpartum depression and low maternal self-efficacy, which can lead to a risk constellation for infanticide. The data confirm the therapeutic response, thus demonstrating that early diagnosis and treatment of postpartum depression can represent a timely and effective preventive approach in the field of child protection. 相似文献93.
Christiane Spitzmüller Dana M. Glenn Meagan M. Sutton Christopher D. Barr Steven G. Rogelberg 《International Journal of Selection & Assessment》2007,15(4):449-459
The present paper examines whether organizational survey response behavior relates to organizational citizenship behavior (OCB). In Study 1, we examined the relationship between OCB dimensions and survey completion intentions in a field setting (n=228). In Study 2, we compared respondents and different groups of nonrespondents on OCB dimensions using an experimental design in a university setting (n=622). Survey response and OCBs were found to be related. OCB research may suffer from nonresponse bias, with organizational surveys failing to capture the opinions of those least likely to engage in OCBs. 相似文献
94.
Huestegge L Heim S Zettelmeyer E Lange-Küttner C 《British journal of psychology (London, England : 1953)》2012,103(1):117-128
Based on the assumption that boys are more likely to tackle reading based on the visual modality, we assessed reading skills, visual short-term memory (VSTM), visual long-term memory for details (VLTM-D), and general non-verbal cognitive ability in primary school children. Reading was within the normal range in both accuracy and understanding. There was no reading performance gap in favour of girls, on the contrary, in this sample boys read better. An entire array of visual, non-verbal processes was associated directly or indirectly with reading in boys, whereas this pattern was not observed for the girls. 相似文献
95.
This study investigated (1) to what extent the goal to be accepted by friends is an underlying function of overt aggressive behavior in adolescents, and (2) whether this function is more predictive than reactive aggression for overt aggressive behavior in first and second generation immigrants compared with natives. The sample comprised 339 native Austrians (51.6% girls), 126 first generation immigrants (48.4% girls), and 175 second generation immigrants (54.3% girls) aged 14 to 19 (M = 15.61). Data were collected via self-assessments. Multiple group latent means and covariance structures (MACS) models revealed that the goal to be accepted by friends was a stronger predictor than reactive aggression for overt aggressive behavior in first generation immigrants compared with second generation immigrants and natives. Furthermore, gender moderated these associations. The goal to be accepted by friends was a very strong predictor of overt aggressive behavior in first generation immigrant boys, but not in first generation immigrant girls. Results are discussed regarding the process of acculturation in first generation immigrant youth. 相似文献
96.
Cohen SA Gustafson SL Marvin ML Riley BD Uhlmann WR Liebers SB Rousseau JA 《Journal of genetic counseling》2012,21(5):645-651
The Service Delivery Model Task Force (SDMTF) was appointed in 2009 by the leadership of the National Society of Genetic Counselors (NSGC) with a charge to research and assess the capacity of all existing service delivery models to improve access to genetic counseling services in the context of increasing demand for genetic testing and counseling. In approaching this charge, the SDMTF found that there were varying interpretations of what was meant by "service delivery models" and the group held extensive discussions about current practices to arrive at consensus of proposed definitions for current genetic service delivery models, modes of referral and components of service delivery. The major goal of these proposed definitions is to allow for conversations to begin to address the charge to the committee. We propose that current models of service delivery can be defined by: 1) the methods in which genetic counseling services are delivered (In-person, Telephone, Group and Telegenetics), 2) the way they are accessed by patients (Traditional referral, Tandem, Triage, Rescue and Self-referral) and 3) the variable components that depend upon multiple factors unique to each service setting. This report by the SDMTF provides a starting point whereby standardized terminology can be used in future studies that assess the effectiveness of these described models to overcome barriers to access to genetic counseling services. 相似文献
97.
The present study compared native Austrian, first and second generation immigrant adolescents regarding their level of depressive symptoms, critical live events, and daily hassles. Furthermore, the associations between these constructs were tested in the three groups. The sample comprised 330 native Austrian (52.1% girls), 120 first generation immigrants (49.2% girls and 159 second generation immigrants (54.2% girls) aged 14-19 (M=15.61). Compared with native adolescents, first generation immigrant adolescents reported more depressive symptoms and daily hassles related to parents, the self, leisure, romantic partner, and future, whilst second generation immigrant adolescents reported more daily hassles related to parents, school, and romantic partner. Controlling for gender, multiple group structural equation models revealed that daily hassles fully mediated the path between critical live events and depressive symptoms in all three groups of adolescents. Implications for future research on immigrant adolescents' psychological well-being are discussed. 相似文献
98.
99.
Eesha Kokje Johannes Gerwien Christiane von Stutterheim 《Journal of Neuropsychology》2022,16(2):306-323
Event perception and cognition is integral to our everyday experience and functional ability. A commonly reported complaint in Alzheimer’s disease (AD) is the inability to follow narratives – be it textual, conversational, video, or pictures. This phenomenon has received little systematic research so far. In the current study, we developed a novel paradigm to examine macro-event recognition in individuals with AD in the early stage and its preceding stage of mild cognitive impairment (MCI) in comparison with cognitively healthy older adults, using pictures depicting events. In Experiment 1, we examined participants’ ability to integrate pictorially depicted sub-events into macro-events. The pictures were presented in a scrambled order, and participants were expected to arrange them in the temporally and causally appropriate sequence, as dictated by the macro-event schema. Additionally, we investigated the effect of cueing the appropriate event schema by providing a word cue (verb). In Experiment 2, macro-event recognition was examined again using a cognitively less taxing paradigm, where pictures depicting sub-events were presented in correct order, but staggered, and recognition speed was measured. We observed significant deficits in the AD and MCI groups’ performance compared with the cognitively healthy older adults, across both experiments, suggesting event perception and cognition is impaired early in the course of AD. There was no effect of cueing on the performance of any of the groups. The theoretical and clinical implications of these findings are discussed. 相似文献
100.
Christiane Schoel Katharina Zimmer Dagmar Stahlberg 《Journal of personality assessment》2015,97(1):66-80
We introduce a new nonverbal and unobtrusive measure to assess power motive activation, the Spatial Power Motivation Scale (SPMS). The unique features of this instrument are that it is (a) very simple and economical, (b) reliable and valid, and (c) sensitive to situational changes. Study 1 demonstrates the instrument's convergent and discriminant validity with explicit measures. Study 2 demonstrates the instrument's responsiveness to situational power motive salience: anticipating and winning competition versus losing competition and watching television. Studies 3 and 4 demonstrate that thoughts of competition result in higher power motivation specifically for individuals with a high dispositional power motive. 相似文献