Memorial University of Newfoundland

About: Memorial University of Newfoundland is a education organization based out in St. John's, Newfoundland and Labrador, Canada. It is known for research contribution in the topics: Population & Gadus. The organization has 13818 authors who have published 27785 publications receiving 743594 citations. The organization is also known as: Memorial University & Memorial University of Newfoundland and Labrador.

Infinite Dimensional Lie Superalgebras

Abstract: Publisher Summary This chapter describes an area which is comparatively new and presents the results of the few references used for recovery.. One of the main sources is the joint monograph [BMPZ]. An extensive use of the monograph is made. All algebras to be considered are vector spaces over K unless otherwise specified. These vector spaces are graded by elements of a commutative additive group G. For other pairs of elements, the commutator is defined by linearity. Ordinary Lie superalgebras find their origin in algebraic topology and find applications in various fields of mathematics. By modifying the operation of a colour Lie superalgebra, there can be a reduction of questions about these algebras to those about ordinary Lie superalgebras. One of the most important concepts, which is a powerful tool in the study of Lie superalgebras is the (universal) enveloping algebra U (L) of a colour Lie superalgebra L. A common way of obtaining superalgebras is through semidirect products. The problem of finding linear bases is important in the case of free Lie algebras, and also in the case of free algebras in varieties other than the variety of all Lie superalgebras.

MK-801 and AP5 impair acquisition, but not retention, of the Morris milk maze.

Abstract: The effects of the NMDA blockers, AP5 and MK-801, were assessed in two spatial tests. AP5 (10 μg in 2 μl ICV, N=6), or MK-801 (0.07 mg/kg IP, N=6), significantly increased open-field activity in male Long-Evans rats in two 3-min tests (Days 1 and 2) compared to control groups receiving equal volume saline injections (N=12). In the Morris milk maze, NMDA blockade significantly impaired acquisition performance on two bblocks of six trials, which followed each open-field test. Only control animals showed evidence of acquisition on a drug-free retention test assessing latency to reach the expected platform area and number of crossings in the area on Day 4. Retention was tested in control animals under NMDA blockade on Day 6. There was no effect of NMDA blockade on retention in the Morris milk maze. These results support the hypothesis that NMDA receptors are critical for the initiation of synaptic modification underlying place learning, but are not necessary in synaptic transmission during retrieval of place information.