Behavioral Genetic Analysis of the Spatial and Temporal Resolution of Vision in the Zebrafish, Danio Rerio

Behavioral Genetic Analysis of the Spatial and Temporal Resolution of Vision in the Zebrafish, Danio Rerio
Author: Matt Smear
Publisher:
Total Pages: 252
Release: 2005
Genre: Neurosciences
ISBN:

It is unclear whether the properties of neuronal circuits beyond the retina limit the spatial and temporal resolution of vision. The kinetics of neurotransmission at central synapses should limit an animal's ability to see rapid movements. Accurate retinotopy should be essential for the perception of fine spatial detail. We have tested these predictions using the zebrafish blumenkohl (blu) mutant. Positional cloning revealed that the blu gene encodes vglut2a, a vesicular glutamate transporter expressed by retinal ganglion cells. blu mutants' retinotectal synapses show diminished responses to high frequency electrical stimulation, which should reduce the visibility of fast-moving visual stimuli. Single retinal axons in blu mutants arborize over a larger area in the tectum, blurring the fine detail of the retinotopic map, which should compromise spatial acuity. We tested these hypotheses using assays for optomotor responses and prey capture. Our study provides experimental support for previously untested principles of sensory coding.

Drug Discovery and Evaluation: Pharmacological Assays

Drug Discovery and Evaluation: Pharmacological Assays
Author: Franz J. Hock
Publisher: Springer
Total Pages: 0
Release: 2015-11-14
Genre: Medical
ISBN: 9783319053912

The 4th edition of this successful reference book contains an updated selection of the most frequently used assays for reliably detecting the pharmacological effects of potential drugs. Effects covered include cardiovascular, analgesic, endocrine, psychotropic, respiratory, renal and immunomodulatory activities. Each of the more than 1,000 assays comprises a detailed protocol outlining the purpose and rationale of the method, a critical assessment of the results and their pharmacological and clinical relevance. In addition, animal models of rare diseases are described. For this 4th edition, all existing chapters have been revised and completely updated. A large number of assays were added. Sections that have been specifically enlarged include - Pharmacological assays in thrombosis and haemostasis, - Antidiabetic activity (includes completely new chapters such as Biochemical Methods in Diabetology), - Anti-atherosclerotic activity. New chapters are added such as Auditory Pharmacology, Oncology Activity, Stem Cells, Omics, Personalized Medicine, etc.

Evolutionary Ecology

Evolutionary Ecology
Author: Anne E. Magurran
Publisher: Oxford University Press on Demand
Total Pages: 219
Release: 2005
Genre: Science
ISBN: 9780198527862

The Trinidadian guppy represents a uniguely tractable vertebrate system, which has raised key questions in evolutionary ecology and supplied many of the answers. This work discusses this study and incorporates significant new findings and insights.

Drug Discovery and Evaluation: Safety and Pharmacokinetic Assays

Drug Discovery and Evaluation: Safety and Pharmacokinetic Assays
Author: H. Gerhard Vogel
Publisher: Springer
Total Pages: 0
Release: 2013-02-27
Genre: Medical
ISBN: 9783642252396

-A landmark in the continuously changing world of drugs -Essential reading for scientists and managers in the pharmaceutical industry involved in drug finding, drug development and decision making in the development process -Of use for government institutions and committees working on official guidelines for drug evaluation worldwide