Hippocampic Theta Rhythm

2008 ◽  
Vol 39 (4) ◽  
pp. 191-193 ◽  
Author(s):  
E. Niedermeyer
Keyword(s):  
Theta Rhythm ◽  
Olfactory Memory ◽  
Cholinergic Mechanisms ◽  
The World ◽  
Rhythmical Activity ◽  
Objective Sign ◽  
Rats And Mice

A prominent theta rhythm dominates the EEG of rodents such as rabbits, rats and mice. This rhythmical activity is preponderant in the hippocampus and may become quite widespread; it is usually arousal-related and generated by cholinergic mechanisms. This pattern has been intensively studied by experimental neuroscientists but is rather little known in circles of clinical electroencephalographers. Hippocampic theta rhythm is also found in canines and felines but at a clearly lesser degree and is practically absent in monkeys and humans. An olfactory memory of the macrosmatic rodents helps us understand “the world in which they live,” their EEG patterns being an objective sign of their neuropsychology.

scholarly journals Conservation success for two Bermudan bird species

Oryx ◽  
1984 ◽  
Vol 18 (3) ◽  
pp. 138-143
Author(s):  
Christopher Lever
Keyword(s):  
Bird Species ◽  
Habitat Destruction ◽  
Forthcoming Book ◽  
The World ◽  
Successful Rehabilitation ◽  
Rats And Mice ◽  
Domestic Stock

The plight of indigenous birds on oceanic archipelagoes often makes depressing reading, as the author points out in his forthcoming book, Naturalized Mammals of the World. Habitat destruction by domestic stock and predation by accidentally introduced rats and mice are the major causes. In Bermuda this discouraging trend has been reversed by the successful rehabilitation of two species within the space of a quarter of a century.

scholarly journals Nonproliferative and Proliferative Lesions of the Rat and Mouse Hematolymphoid System

2019 ◽  
Vol 47 (6) ◽  
pp. 665-783 ◽  
Author(s):  
Cynthia L. Willard-Mack ◽  
Susan A. Elmore ◽  
William C. Hall ◽  
Johannes Harleman ◽  
C. Frieke Kuper ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Great Britain ◽  
North America ◽  
Lymph Nodes ◽  
Diagnostic Criteria ◽  
Lymphoid Tissues ◽  
The World ◽  
Tertiary Lymphoid Structures ◽  
Lymphoid Structures ◽  
Rats And Mice

The INHAND Project (International Harmonization of Nomenclature and Diagnostic Criteria for Lesions in Rats and Mice) is a joint initiative of the Societies of Toxicologic Pathology from Europe (ESTP), Great Britain (BSTP), Japan (JSTP), and North America (STP) to develop an internationally accepted nomenclature for proliferative and nonproliferative changes in rats and mice. The purpose of this publication is to provide a standardized nomenclature for classifying changes observed in the hematolymphoid organs, including the bone marrow, thymus, spleen, lymph nodes, mucosa-associated lymphoid tissues, and other lymphoid tissues (serosa-associated lymphoid clusters and tertiary lymphoid structures) with color photomicrographs illustrating examples of the lesions. Sources of material included histopathology databases from government, academia, and industrial laboratories throughout the world. Content includes spontaneous lesions as well as lesions induced by exposure to test materials. The nomenclature for these organs is divided into 3 terminologies: descriptive, conventional, and enhanced. Three terms are listed for each diagnosis. The rationale for this approach and guidance for its application to toxicologic pathology are described in detail below.

scholarly journals A synopsis of the Fleas found on Mus norwegicus decumanus, Mus rattus alexandrinus and Mus musculus

1910 ◽  
Vol 1 (2) ◽  
pp. 89-98 ◽  
Author(s):  
N. Charles Rothschild
Keyword(s):  
Mus Musculus ◽  
Native Species ◽  
Domestic Animals ◽  
Cosmopolitan Species ◽  
The World ◽  
Local Species ◽  
Rats And Mice ◽  
Number Of Individuals ◽  
Permanent Increase

The three species of the genus Mus mentioned above follow in the wake of civilised man and may be looked upon as more or less domestic animals. Moreover, when they appear in any new locality, they seem to possess the power of eliminating the previously established native species of rats and mice, and they thus obtain for themselves a wider field and the opportunity for a rapid permanent increase in number of individuals. Of the three, Mus rattus alone habitually infests ships, but by accidental transference in vessels from port to port all three have become distributed throughout the world. Australia is especially rich in peculiar local species of rats, abundantly distinct from, but to some extent resembling, Mus rattus. This circumstance renders it not improbable that on occasion animals from Australia may have been incorrectly identified with that cosmopolitan species.

scholarly journals PERSPECTIVES OF THE USE OF SULFORAPHANE IN ANIMAL MODEL OF COLORECTAL CARCINOGENESIS IN BRAZIL: A REVIEW

2019 ◽  
Vol 7 (12) ◽  
pp. 421-427
Author(s):  
Rondon Ramalho ◽  
César Augusto Sobrinho ◽  
Evair Moisés De Lima Santiago ◽  
Marcelo Barbosa Neves ◽  
Alessandra De Figueiredo Gonçalves ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Genetically Modified ◽  
Experimental Studies ◽  
Colorectal Carcinogenesis ◽  
World Health ◽  
Mortality And Morbidity ◽  
Aberrant Crypts ◽  
The World ◽  
Rats And Mice ◽  
Biological Actions

Colon cancer is a growing health problem in Brazil. According to data from the World Health Organization (WHO), colon cancer is among the top ten causes of mortality and morbidity in the world. Besides, the disease has a significant economic impact on the Brazilian public health system. Over the past five years, there has been an increased interest in use, isolation, characterization and determination of the biological actions of compounds such as broccoli. Experimental studies with genetically modified (GMOs) rats, mice, and rats using Sulforaphane have demonstrated their ability to prevent, delay and reverse pre-neoplastic lesions, improved survival, as well as acting on neoplastic cells with therapeutic action. Sulforaphane through activation of Nrf2 increases the activity of phase II enzymes such as glutathione S transferase (GST), which is involved in the elimination of xenobiotic compounds. Aberrant crypts are induced, in Wistar rats and mice, by genotoxic and non-genotoxic chemical compounds. Colon carcinogenesis is generally induced in rats and mice by two substances, 1,2-dimethylhydrazine (DMH) and azoxymethane (AOM). Azoxymethane is often used concerning DMH because it is more potent and requires few reactions for its activation. It is possible to conclude that Sulforaphane, through its various biological actions, presents efficiency in the prevention of colon cancer and significant potential for use in future experimental studies with genetically modified rats, mice, and rats.

A pragmatist philosophy of psychological science and its implications for replication

2018 ◽  
Vol 41 ◽  
Author(s):  
Ana Gantman ◽  
Robin Gomila ◽  
Joel E. Martinez ◽  
J. Nathan Matias ◽  
Elizabeth Levy Paluck ◽  
...  
Keyword(s):  
William James ◽  
Mental Processes ◽  
Psychological Science ◽  
Behavioral Measurement ◽  
The World ◽  
Pragmatist Philosophy

AbstractA pragmatist philosophy of psychological science offers to the direct replication debate concrete recommendations and novel benefits that are not discussed in Zwaan et al. This philosophy guides our work as field experimentalists interested in behavioral measurement. Furthermore, all psychologists can relate to its ultimate aim set out by William James: to study mental processes that provide explanations for why people behave as they do in the world.

Culture and the plasticity of perception

2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann
Keyword(s):  
Cultural Context ◽  
Sensory Experience ◽  
Cultural Learning ◽  
The World

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.

Let's call a memory a memory, but what kind?

2019 ◽  
Vol 42 ◽  
Author(s):  
Nazim Keven
Keyword(s):  
Episodic Memory ◽  
Animal Cognition ◽  
The World

Abstract Hoerl & McCormack argue that animals cannot represent past situations and subsume animals’ memory-like representations within a model of the world. I suggest calling these memory-like representations as what they are without beating around the bush. I refer to them as event memories and explain how they are different from episodic memory and how they can guide action in animal cognition.

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