MTT Explained - Course NEUR 0193: Great Controversies in Neurobiology In the last decade a new theory has taken form, challenging the standard model of memory consolidation (SMC). Nadel and Moscovitch (1997) put forth the Multiple Trace Theory (MTT), which posits that the hippocampus is necessary for retrieval of remote memories. Proponents of MTT claim that SMC suffers from several serious problems, such as: 1. The length of the consolidation period (as demonstrated by the length of retrograde amnesia in subjects/patients) varies with the method of induced amnesia as well as the memory task that the subject is asked to complete. Methods of induced amnesia include lesion, electroconvulsive shock, or pharmacological intervention.
Institutional theory - IS Theory Institutional theory Acronym Alternate name(s) Institutionalism, New Institutional Theory Main dependent construct(s)/factor(s) Institutional emergence, conformity, conflict, change, isomorphism NSF - National Science Foundation Division of Social and Economic SciencesLSS Program Clarifications Please attend to the Law & Social Sciences Postdoctoral Fellows announcement in the solicitation. Please note that the fellowships are project-based, and that they require at least two PIs from different disciplines. PIs are to have a project upon which a postdoctoral fellow will work.Please note the description of conference and workshop awards.
Our Brains Instantly Make Two Copies of Each Memory — NOVA Next For decades, we’ve thought that memories were formed in two distinct stages—short-term first, then long-term later. We might be wrong. New research suggests that our brains make two copies of each memory in the moment they are formed. One is filed away in the hippocampus, the center of short-term memories, while the other is stored in cortex, where our long-term memories reside.
Institutional Theory Institutional Theory: Meyer & Rowan, DiMaggio & Powell Institutional theorists assert that the institutional environment can strongly influence the development of formal structures in an organization, often more profoundly than market pressures. Innovative structures that improve technical efficiency in early-adopting organizations are legitimized in the environment. Ultimately these innovations reach a level of legitimization where failure to adopt them is seen as "irrational and negligent" (or they become legal mandates). At this point new and existing organizations will adopt the structural form even if the form doesn't improve efficiency.
Postnatal light alters hypothalamic-pituitary-adrenal (HPA) axis function and induces a depressive-like phenotype in adult mice - Coleman - 2016 - European Journal of Neuroscience The postnatal light environment that a mouse experiences during the critical first 3 postnatal weeks has long-term effects on both its circadian rhythm output and clock gene expression. Furthermore, data from our lab suggest that postnatal light may also impact the hypothalamic-pituitary-adrenal (HPA) axis, which is a key regulator of stress. To test the effect of postnatal light exposure on adult stress responses and circadian rhythmicity, we raised mice under either 24-h light-dark cycles (LD), constant light (LL) or constant dark (DD) during the first 3 postnatal weeks. After weaning we then exposed all animals to LD cycles (basal conditions), followed by LL (stressed conditions) environments. We examined brain neuropeptide and glucocorticoid receptor (GR) expression, plasma corticosterone concentration rhythm and body temperature rhythm, together with depression- and anxiety-related behaviour. This article is protected by copyright.
Cause of infantile amnesia revealed: New neuron formation could increase capacity for new learning, at expense of old memories New research presented today shows that formation of new neurons in the hippocampus -- a brain region known for its importance in learning and remembering -- could cause forgetting of old memories by causing a reorganization of existing brain circuits. Drs. Paul Frankland and Sheena Josselyn, both from the Hospital for Sick Children in Toronto, argue this reorganization could have the positive effect of clearing old memories, reducing interference and thereby increasing capacity for new learning. These results were presented at the 2013 Canadian Neuroscience Meeting, the annual meeting of the Canadian Association for Neuroscience -- Association Canadienne des Neurosciences (CAN-ACN). Researchers have long known of the phenomenon of infantile amnesia: This refers to the absence of long-term memory of events occurring within the first 2-3 years of life, and little long-term memories for events occurring until about 7 years of age. Dr.
An Institutional Theory perspective on sustainable practices across the dairy supply chain Open Access Abstract The need for sustainable practices in the food supply chain, particularly in the area of energy reduction, is becoming acute.