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

Soundness of Cement01:17

Soundness of Cement

542
The soundness of cement refers to the ability of cement paste to retain its volume after setting. Unsound cement can lead to expansion and structural damage due to the presence of free lime, magnesia, and calcium sulfate. Free lime hydrates very slowly, expanding and causing unsoundness, which is difficult to detect because it intercrystallizes with other compounds. Magnesia also reacts with water, forming crystals that can disrupt the cement's structure. Calcium sulfate can create...
542
Heart Sounds01:15

Heart Sounds

3.3K
Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V)...
3.3K
Korotkoff Sounds01:12

Korotkoff Sounds

7.7K
Korotkoff sounds are the specific sounds heard while measuring blood pressure using a sphygmomanometer, typically with a stethoscope or a Doppler device. They are named after Russian physician Nikolai Korotkov, who first described them in 1905. These sounds correspond to turbulent blood flow in the artery as the blood pressure cuff is gradually released after inflation.
During blood pressure assessment, inflating the cuff 30 millimeters of mercury above the patient's systolic blood pressure...
7.7K
Sound Waves01:01

Sound Waves

12.5K
Sound waves can be thought of as fluctuations in the pressure of a medium through which they propagate. Since the pressure also makes the medium's particles vibrate along its direction of motion, the waves can be modeled as the displacement of the medium's particles from their mean position.
Sound waves are longitudinal in most fluids because fluids cannot sustain any lateral pressure. In solids, however, shear forces help in propagating the disturbance in the lateral direction as well....
12.5K
Sound Intensity00:58

Sound Intensity

4.7K
The loudness of a sound source is related to how energetically the source is vibrating, consequently making the molecules of the propagation medium vibrate. To measure the loudness of a source, the physical quantity of interest is the intensity. This is defined as the energy emitted per unit of time per unit of area perpendicular to the sound wave's propagation direction. Since the total energy is greater if the source vibrates for a longer duration and over a larger area, dividing the...
4.7K
Critical Region, Critical Values and Significance Level01:16

Critical Region, Critical Values and Significance Level

13.2K
The critical region, critical value, and significance level are interdependent concepts crucial in hypothesis testing.
In hypothesis testing, a sample statistic is converted to a test statistic using z, t, or chi-square distribution. A critical region is an area under the curve in  probability distributions demarcated by the critical value. When the test statistic falls in this region, it suggests that the null hypothesis must be rejected. As this region contains all those values of the...
13.2K

You might also read

Related Articles

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

Sort by
Same author

Subtle language deficits in WAB-recovered patients at 12 months after left-hemisphere stroke.

medRxiv : the preprint server for health sciences·2026
Same author

Acute-Phase Machine Learning Prediction of 12-Month Aphasia and Discourse Recovery.

medRxiv : the preprint server for health sciences·2026
Same author

Revisiting Western Aphasia Battery-Revised in the Context of Mild Impairment.

American journal of speech-language pathology·2026
Same author

White matter predictors of cerebellar tDCS treatment effects in aphasia rehabilitation.

Frontiers in neurology·2026
Same author

Gradation of Prolonged Venous Transit on Perfusion Imaging Highlights the Association of Deep Venous Drainage Impairment with Unfavorable Functional Outcome in Successfully Reperfused Anterior Circulation Large-Vessel-Occlusion Stroke.

AJNR. American journal of neuroradiology·2026
Same author

Posttreatment Follow-Up MR Imaging Biomarkers of Collateral Status Are Associated with Short-Term Outcomes in Large-Vessel Acute Ischemic Stroke.

AJNR. American journal of neuroradiology·2026

Related Experiment Video

Updated: Jan 20, 2026

Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors
08:32

Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors

Published on: January 3, 2017

23.1K

Neural processing critical for distinguishing between speech sounds.

Kevin Kim1, Luke Adams1, Lynsey M Keator1

  • 1Department of Neurology, Johns Hopkins University School of Medicine, United States.

Brain and Language
|August 24, 2019
PubMed
Summary
This summary is machine-generated.

Stroke-related brain damage can impair phoneme discrimination, affecting spoken word comprehension. Lesions in specific left hemisphere areas like the intraparietal sulcus and superior temporal gyrus are linked to these acute deficits.

Keywords:
Acute ischemic strokeAuditory processingLesion-deficit mappingPhoneme discrimination

More Related Videos

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping
09:16

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Published on: March 24, 2023

1.9K
Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities
09:38

Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities

Published on: January 29, 2014

11.2K

Related Experiment Videos

Last Updated: Jan 20, 2026

Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors
08:32

Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors

Published on: January 3, 2017

23.1K
Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping
09:16

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Published on: March 24, 2023

1.9K
Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities
09:38

Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities

Published on: January 29, 2014

11.2K

Area of Science:

  • Neuroscience
  • Neurology
  • Speech and Language Pathology

Background:

  • Stroke is a leading cause of acquired neurological deficits.
  • Phoneme discrimination is crucial for spoken language comprehension.
  • The neural basis of acute post-stroke phoneme discrimination deficits is not fully understood.

Purpose of the Study:

  • To identify brain regions where acute ischemia after stroke correlates with phoneme discrimination impairment.
  • To determine if phoneme discrimination deficits are associated with impaired spoken word comprehension.

Main Methods:

  • Evaluated 33 patients within 48 hours of left hemisphere ischemic stroke.
  • Utilized tests for phoneme discrimination and word-picture matching.
  • Correlated lesion location and extent with phoneme discrimination accuracy.

Main Results:

  • 54% of patients exhibited phoneme discrimination deficits compared to controls.
  • Phoneme discrimination accuracy correlated significantly with word comprehension accuracy.
  • Damage to the left intraparietal sulcus and left superior temporal gyrus (or hypoperfusion) were associated with acute deficits.

Conclusions:

  • Acute ischemic stroke can cause phoneme discrimination deficits, impacting spoken word comprehension.
  • Specific left hemisphere regions, including the intraparietal sulcus and superior temporal gyrus, are critical for phoneme processing post-stroke.
  • These deficits may improve or resolve by six months post-stroke.