Functional Study
Functional Study - Related Videos
08:59
Using the optokinetic response to study visual function of zebrafish
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Cited by 34 •
2010
Optokinetic response has been widely used to assess the visual functions of larval zebrafish. Nevertheless, the standard protocol for larval fish is not yet readily applicable in adults1-5. Here, we introduce how to measure the OKR of adult zebrafish using a new protocol which is established in our lab.
20:12
Using MazeSuite and Functional Near Infrared Spectroscopy to Study Learning in Spatial Navigation
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Cited by 209 •
2011
MazeSuite is a complete toolset to prepare, present and analyze navigational and spatial experiments. Functional near-infrared spectroscopy (fNIR) is an optical brain imaging technique that enables noninvasive and portable monitoring of cerebral blood oxygenation changes. This paper summarizes collective use of MazeSuite and fNIR within a cognitive processing learning paradigm.
08:00
Studying Brain Function in Children Using Magnetoencephalography
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Cited by 18 •
2019
This article introduces a child-friendly research protocol designed to improve data quality by reducing head movement during pediatric magnetoencephalography (MEG). We familiarize families with the MEG environment, train children to remain still using an MEG simulator, and correct for residual head movement artefacts using a real-time head movement detection system.
01:24
Serum Studies: Renal Function Tests
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2025
Renal function tests are crucial for assessing kidney health, monitoring disease progression, and evaluating the kidneys' efficiency in waste elimination, fluid balance, and electrolyte regulation. These tests offer critical insights into kidney function, even though routine measurements may appear normal until there is a significant decline in the glomerular filtration rate or GFR. Typically, signs of kidney impairment only become evident when the GFR falls to about 50% of its normal level.
10:22
Reconstitution of a Kv Channel into Lipid Membranes for Structural and Functional Studies
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Cited by 11 •
2013
Procedures for complete reconstitution of a prototype voltage-gated potassium channel into lipid membranes are described. The reconstituted channels are suitable for biochemical assays, electrical recordings, ligand screening and electron crystallographic studies. These methods may have general applications to the structural and functional studies of other membrane proteins.
FAQs
A functional study gains stronger evidence when it combines manipulation with comparison under defined conditions. If changing a gene, protein, cell, or organ is followed by a reproducible change in molecular activity, cellular behavior, physiological response, or observable trait, the component’s contribution becomes more plausible. This design helps separate biological contribution from mere correlation and supports mechanistic interpretation.
Defined conditions make observed differences more interpretable. Researchers can relate a component’s activity to a measured response while limiting ambiguity about whether the change reflects the component or another experimental circumstance. Depending on the question, measurements may focus on molecular activity, cellular behavior, physiology, or traits, allowing the same functional logic to be examined at different biological levels.
Functional study can bridge levels of organization by linking molecular activity with cellular behavior, physiological responses, and observable traits. Combining genetic, biochemical, and imaging approaches provides complementary evidence rather than relying on one measurement alone. This integration is especially useful when researchers need to connect molecular structure or activity with larger outcomes in development, disease, or adaptation.
Researchers first select the biological component and process of interest, then manipulate or compare it under defined conditions. They next measure a relevant response using molecular, cellular, physiological, or trait-level observations. Interpreting the change in relation to the tested component allows the study to assess function and propose a mechanism. The precise assay and readout depend on the biological question.
Genetic approaches can test the consequences of changing a biological component, biochemical approaches can examine molecular activity, and imaging approaches can reveal relevant cellular or structural changes. Functional studies may combine these methods so that activity and resulting cellular behavior can be considered together. Such complementary measurements strengthen interpretation when one readout alone cannot explain the observed outcome.
Functional studies are used to clarify mechanisms in development, disease, and adaptation, while also evaluating potential therapeutic targets. Their findings can connect a component’s activity to measurable biological outcomes, supporting basic research and informing diagnostics or drug development. The value lies in translating experimental changes into evidence about how biological systems operate and how they may be altered.