Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Significance of Displacement Current01:27

Significance of Displacement Current

5.9K
A displacement current is analogous to a real current in Ampère's law, participating in Ampère's law the same way as the usual conduction current. However, it is produced by a changing electric field. Displacement current is defined in terms of a time-varying electric field, and also has an associated displacement current density. By adding a term accounting for displacement current, Maxwell modified the existing Ampère's law, which is now called generalized Ampère's law.
5.9K
Statistical Significance01:50

Statistical Significance

21.3K
Once data is collected from both the experimental and the control groups, a statistical analysis is conducted to find out if there are meaningful differences between the two groups. A statistical analysis determines how likely any difference found is due to chance (and thus not meaningful). In psychology, group differences are considered meaningful, or significant, if the odds that these differences occurred by chance alone are 5 percent or less. Stated another way, if we repeated this...
21.3K
Significance of Center of Mass01:12

Significance of Center of Mass

7.7K
The center of mass of an object is defined as the mass-weighted average position of all the particles that comprise the object. The significance of the center of mass of an object can be seen by looking at its dynamics. The time derivative of the center of mass gives its velocity, assuming that the object's mass remains constant over time. Furthermore, the total linear momentum of an object can be seen as the linear momentum of a single particle of the object's total mass moving with...
7.7K
The Significance of Membrane Transport01:44

The Significance of Membrane Transport

41.7K
The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action potential, exchanging nutrients and gases, etc. Membrane transport can be either passive or active. It can be simple diffusion, facilitated, or mediated transport aided by transport proteins such as transporters and channels.
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
41.7K
Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

1.4K
Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
1.4K
Significance Testing: Overview01:04

Significance Testing: Overview

12.7K
Significance testing is a set of statistical methods used to test whether a claim about a parameter is valid. In analytical chemistry, significance testing is used primarily to determine whether the difference between two values comes from determinate or random errors. The effect of a particular change in the measurement protocol, analyst, or sample itself can cause a deviation from the expected result. In the case of a suspected deviation/outlier, we need to be able to confirm mathematically...
12.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Exploring the brain basis of self-monitoring.

Cortex; a journal devoted to the study of the nervous system and behavior·2026
Same author

Clinical and MRI Predictors of Conversion From Mild Behavioural Impairment to Dementia.

The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry·2020
Same author

Transatlantic Crossings: Early neurological exchanges between USA and France.

Revue neurologique·2019
Same author

Aligning nomenclature for cognitive changes associated with anaesthesia and surgery with broader diagnostic classifications of non-surgical populations: a needed first step.

British journal of anaesthesia·2018
Same author

The past and future of Functional Neurology.

Functional neurology·2017
Same author

Women with epilepsy.

Functional neurology·2016

Related Experiment Video

Updated: Jan 30, 2026

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
03:56

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy

Published on: September 13, 2022

2.9K

Acalculia: historical development and current significance.

F Boller, J Grafman

    Brain and Cognition
    |July 1, 1983
    PubMed
    Summary

    Acalculia, a loss of calculation skills from brain damage, is now recognized as a distinct disorder, not just a symptom of other conditions. Research links this cognitive impairment primarily to damage in the left posterior brain regions.

    Area of Science:

    • Neuroscience
    • Cognitive Psychology
    • Neurology

    Background:

    • Acalculia, the inability to perform mathematical calculations, was historically viewed as a secondary symptom of broader neurological conditions like aphasia or dementia.
    • This perspective has evolved, recognizing acalculia as a potentially independent neurological disorder.

    Observation:

    • The paper reviews the historical and evolving understanding of acalculia.
    • It examines the diagnostic criteria and conceptualization of acalculia over time.

    Findings:

    • Current research suggests that acalculia can manifest as a distinct disorder.
    • Evidence strongly associates acalculia with specific brain damage, particularly lesions in the left posterior hemispheric areas.

    Implications:

    More Related Videos

    In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
    09:31

    In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses

    Published on: March 30, 2015

    9.3K
    Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy
    11:27

    Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy

    Published on: February 7, 2015

    20.2K

    Related Experiment Videos

    Last Updated: Jan 30, 2026

    A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
    03:56

    A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy

    Published on: September 13, 2022

    2.9K
    In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
    09:31

    In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses

    Published on: March 30, 2015

    9.3K
    Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy
    11:27

    Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy

    Published on: February 7, 2015

    20.2K
    • Understanding acalculia as an autonomous disorder necessitates tailored diagnostic and therapeutic strategies.
    • Identifying specific lesion locations, such as the left posterior hemisphere, aids in predicting and potentially treating calculation deficits.