Homer1 belongs to a family of scaffolding proteins that interact with various post-synaptic density proteins including group I metabotropic glutamate receptors (mGluR1/5). Previous research in our laboratory implicates the Homer1c isoform in spatial learning. Homer1 knockout mice (H1-KO) display cognitive impairments, but their synaptic plasticity properties have not been described. Here, we investigated the role of Homer1 in long-term potentiation (LTP) in the hippocampal CA1 region of H1-KO mice in vitro. We found that late-phase LTP elicited by high frequency stimulation (HFS) was impaired, and that the induction and maintenance of theta burst stimulation (TBS) LTP were reduced in H1-KO. To test the hypothesis that Homer1c was sufficient to rescue these LTP deficits, we delivered Homer1c to the hippocampus of H1-KO using recombinant adeno-associated virus (rAAV). We found that rAAV-Homer1c rescued HFS and TBS-LTP in H1-KO animals. Next, we tested whether the LTP rescue by Homer1c was occurring via mGluR1/5. A selective mGluR5 antagonist, but not an mGluR1 antagonist, blocked the Homer1c-induced recovery of late-LTP, suggesting that Homer1c mediates functional effects on plasticity via mGluR5. To investigate the role of Homer1c in spatial learning, we injected rAAV-Homer1c to the hippocampus of H1-KO. We found that rAAV-Homer1c significantly improved H1-KO performance in the Radial Arm Water Maze. These results point to a significant role for Homer1c in synaptic plasticity and learning. 相似文献
This article discusses the origins of cross-cultural interest in two concepts fundamental to psychology students' views of the world: simple visual illusions and ethnocentrism. Although students encounter these ideas in introductory psychology, textbooks rarely describe the nature or origin of cross-cultural knowledge about them. The article presents a brief account of the history of these concepts and relates them to contemporary notions of psychology and culture. Using visual perception and ethnocentrism as examples, the article suggests the importance of teaching that different people see the world in different ways and the role of that lesson in a future demanding increased cross-cultural understanding. 相似文献
This study explored youth caregiving for a parent with multiple sclerosis (MS) from multiple perspectives, and examined associations between caregiving and child negative (behavioural emotional difficulties, somatisation) and positive (life satisfaction, positive affect, prosocial behaviour) adjustment outcomes overtime. A total of 88 families participated; 85 parents with MS, 55 partners and 130 children completed questionnaires at Time 1. Child caregiving was assessed by the Youth Activities of Caregiving Scale (YACS). Child and parent questionnaire data were collected at Time 1 and child data were collected 12 months later (Time 2). Factor analysis of the child and parent YACS data replicated the four factors (instrumental, social-emotional, personal-intimate, domestic-household care), all of which were psychometrically sound. The YACS factors were related to parental illness and caregiving context variables that reflected increased caregiving demands. The Time 1 instrumental and social-emotional care domains were associated with poorer Time 2 adjustment, whereas personal-intimate was related to better adjustment and domestic-household care was unrelated to adjustment. Children and their parents exhibited highest agreement on personal-intimate, instrumental and total caregiving, and least on domestic-household and social-emotional care. Findings delineate the key dimensions of young caregiving in MS and the differential links between caregiving activities and youth adjustment. 相似文献
The Psychological Record - Equivalence-based instruction (EBI) involves the teaching of socially relevant material (e.g., academic material) with stimulus equivalence procedures. In the research... 相似文献
The Psychological Record - Staff training is an important line of research to ensure that clinicians in the field of applied behavior analysis provide quality services. One approach to providing... 相似文献
Journal of Child and Family Studies - Grounded in Interpersonal Acceptance-Rejection Theory, this study assessed children’s (N?=?1315) perceptions of maternal and paternal... 相似文献
This study evaluated the effectiveness, change mechanisms, and sustainability of a brief mindfulness intervention for people with multiple sclerosis (PwMS) delivered in the community through a frontline service over five years. Participants were 126 PwMS. A single intervention condition design was used with pre-intervention, post-intervention and 2-month follow-up assessments. The primary outcome was distress. Secondary outcomes were perceived stress, quality of life (QoL) and fatigue, and the proposed change mechanisms: mindfulness, self-compassion, psychological inflexibility. Intention-to-treat analyses showed the primary outcome, distress (Cohen’s d = .25), and all secondary outcomes improved: perceived stress (d = .38), mental health QoL (d = .39), physical health QoL (d = .47), fatigue (d = .30), mindfulness (d = .29), self-compassion (d = .37), psychological flexibility (d = .44). Distress, stress and perceived stress continued to improve post-intervention to follow-up. Mindfulness emerged as a temporal mediator of perceived stress (BCa 95% CI). Self-compassion mediated concurrent improvements in distress, perceived stress, fatigue and physical health QoL, while greater psychological flexibility mediated concurrent reductions in distress (BCa 95% CI). Mindfulness home practice was unrelated to improvements on all outcomes except a marginal association with mindfulness. Of the socio-demographic and illness factors, lower disease severity predicted improvements in physical health QoL (p = .046). Improvements in outcomes were supported by qualitative feedback and participant satisfaction ratings. Twenty-one groups were offered with good participant engagement and wide geographical reach, suggesting sustained feasibility of the Mindfulness for MS program over five years. Findings support the delivery of the Mindfulness for MS program through a community-based service in partnership with a local university.
The present study investigated early communicative gestures, play, and language skills in children born with family risk for dyslexia (FR) and a control group of children without this inheritable risk at ages 12, 15, 18, and 24 months. Participants were drawn from the Tromsø Longitudinal study of Dyslexia (TLD) which follows children's cognitive and language development from age 12 months through Grade 2 in order to identify early markers of developmental dyslexia. Results showed that symbolic play and parent reported play at age 12 months and communicative gestures at age 15 months explained 61% of the variance in productive language at 24 months in the FR group. These early nonlinguistic measures seem to be potentially interesting markers of later language development in children born at risk for dyslexia. 相似文献