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

Perception01:28

Perception

441
Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
441
Perceptual Constancy01:12

Perceptual Constancy

364
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
364
Gestalt Principles of Perception01:21

Gestalt Principles of Perception

283
Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
283
Perception of Sound Waves01:01

Perception of Sound Waves

4.4K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
4.4K
Factors Affecting Perception01:25

Factors Affecting Perception

1.5K
Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
1.5K
Extrasensory Perception01:23

Extrasensory Perception

203
Extrasensory perception, or ESP, suggests the ability to perceive events beyond the conventional senses of sight, hearing, and touch. Parapsychologists, who research ESP and related psychic phenomena, categorize ESP into three main types: precognition, telepathy, and clairvoyance.
Precognition involves foreseeing future events, such as predicting an accident before it happens. An example of precognition could be someone dreaming about a specific event, like a car crash, which then occurs...
203

You might also read

Related Articles

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

Sort by
Same author

Mitral valve surgery post-transcatheter aortic valve replacement: A 10-year, single-center, retrospective analysis.

JTCVS structural and endovascular·2026
Same author

Left ventricular perforation after transatrial delivery of a balloon-expandable valve.

JTCVS structural and endovascular·2026
Same author

Aortic dissection after transcatheter aortic valve replacement.

JTCVS structural and endovascular·2026
Same author

A decade of cardiac surgery after transcatheter aortic valve replacement: Short-term clinical outcomes at a high-volume center.

JTCVS structural and endovascular·2026
Same author

Redo surgical aortic valve replacement versus valve-in-valve transcatheter aortic valve replacement with balloon valve fracture: Short-term clinical outcomes.

JTCVS structural and endovascular·2026
Same author

Transcatheter aortic valve replacement use in young patients before and after the first low-risk trial publication.

JTCVS structural and endovascular·2026
Same journal

Sudden Cardiac Arrest and Takotsubo-Like Cardiomyopathy as the Initial Presentation of Primary Carnitine Deficiency.

JACC. Case reports·2026
Same journal

Secondary Cardiac Lymphoma Presenting as Effusive-Constrictive Pericarditis.

JACC. Case reports·2026
Same journal

Left Ventricular Outflow Tract Rupture in a Case of Pediatric Bicuspid Aortic Valve Endocarditis.

JACC. Case reports·2026
Same journal

Lyme Myopericarditis With Effusive-Constrictive Physiology: Serial CMR Identifies a Reversible Inflammatory Phenotype.

JACC. Case reports·2026
Same journal

Transcatheter Edge-to-Edge Repair of a Functionally Trileaflet Mitral Valve.

JACC. Case reports·2026
Same journal

Managing Rheumatic Mitral Stenosis Complicated by Shock and Cardiac Cirrhosis Beyond Guidelines.

JACC. Case reports·2026
See all related articles

Related Experiment Video

Updated: Jun 12, 2025

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
05:43

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

Published on: May 23, 2019

5.4K

Perceval ViV-TAVR: Perception Is Not Always Reality.

Maximilian Reisinger1, Elizabeth James2, Mateusz Kachel1,3

  • 1Division of Cardiac, Thoracic & Vascular Surgery, New York-Presbyterian Hospital, Columbia University Medical Center, New York, New York, USA.

JACC. Case Reports
|September 19, 2024
PubMed
Summary
This summary is machine-generated.

Valve-in-valve transcatheter aortic valve replacement is safe for failed Perceval valves but technically challenging. This case highlights a rare complication of wire passage outside the valve frame during the procedure.

Keywords:
Perceval sutureless valvetranscatheter aortic valve replacementvalve-in-valve

More Related Videos

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

25.1K
Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation
06:53

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation

Published on: March 1, 2017

13.2K

Related Experiment Videos

Last Updated: Jun 12, 2025

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
05:43

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

Published on: May 23, 2019

5.4K
Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

25.1K
Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation
06:53

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation

Published on: March 1, 2017

13.2K

Area of Science:

  • Cardiovascular Medicine
  • Interventional Cardiology
  • Biomaterials Science

Background:

  • Transcatheter aortic valve replacement (TAVR) is a standard treatment for aortic stenosis.
  • Sutureless aortic valves, like the Perceval prosthesis, offer specific advantages in TAVR procedures.
  • Valve-in-valve (VIV) TAVR is an established option for managing degenerated bioprosthetic valves.

Observation:

  • The Perceval valve is a sutureless bioprosthesis used in TAVR.
  • Valve-in-valve TAVR procedures for failed Perceval valves are feasible and safe.
  • Technical challenges and potential complications require careful consideration during VIV TAVR.

Findings:

  • A case of successful VIV TAVR for a failed Perceval valve is presented.
  • The procedure was complicated by inadvertent guidewire passage outside the intended Perceval valve frame.
  • Despite the complication, the valve implantation was ultimately successful.

Implications:

  • This case underscores the technical complexities associated with VIV TAVR in Perceval prostheses.
  • Understanding and anticipating rare complications, such as extra-stent guidewire migration, is crucial for procedural safety.
  • Further refinement of techniques may be necessary to mitigate risks in complex VIV TAVR scenarios.