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

Concepts and Prototypes01:24

Concepts and Prototypes

527
The human nervous system handles vast amounts of information by translating sensory stimuli into neural impulses, which the brain processes, creating thoughts expressed through language or stored as memories. The brain also synthesizes information from emotions and memories, which significantly influence thoughts and behaviors. This intricate process creates a comprehensive mental picture.
The brain organizes this information using concepts, which are mental categories grouping linguistic data,...
527
Average Acceleration01:30

Average Acceleration

13.0K
The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...
13.0K
Average Power01:13

Average Power

1.0K
In practical electrical applications, the concept of time-varying instantaneous power is not frequently utilized. Instead, focus shifts to the more practical quantity known as average power. Average power is determined by integrating the instantaneous power over a specified time period and subsequently dividing it by that duration.
1.0K
Average Velocity01:12

Average Velocity

22.6K
To calculate the other physical quantities in kinematics, we must introduce the time variable. The time variable allows us not only to state the position of the object during its motion, but also how fast it is moving. The speed at which an object is moving is given by the rate at which the position changes with time. For each position xi, we assign a particular time ti. If the details of the motion at each instant are not important, the rate is usually expressed as the average velocity. This...
22.6K
Average and Instantaneous Velocity Vectors01:12

Average and Instantaneous Velocity Vectors

8.6K
To calculate other physical quantities in kinematics, the time variable must be introduced. The time variable not only allows us to state where an object is (its position) during its motion, but also how fast it’s moving. The speed at which an object is moving is given by the rate at which the position changes with time. For each position, a particular time is assigned. If the details of the motion at each instant are not important, the rate is usually expressed as the average velocity v.
8.6K
Cis-regulatory Sequences02:02

Cis-regulatory Sequences

11.6K
Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
11.6K

You might also read

Related Articles

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

Sort by
Same author

Association of triglyceride-cholesterol-body weight index with in-hospital mortality in critically ill patients with heart failure.

Scientific reports·2026
Same author

Triple-interlocked-nanotwinned bulk magnesium alloys with exceptional strength and ageing resistance.

Nature communications·2026
Same author

Set-shifting and task-switching make differential contributions to divergent thinking in adolescence.

BMC psychology·2026
Same author

Deep learning-guided discovery and engineering of binding peptides for accelerated enzymatic degradation of polyethylene terephthalate.

Trends in biotechnology·2026
Same author

Grain-Boundary-Free Fusion of Non-Oriented Nanocrystals via Transient Amorphization.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Fuel-propelled nanomotors for acute kidney injury applications.

Pharmaceutical science advances·2026

Related Experiment Video

Updated: Jan 25, 2026

Detection and Removal of Nuclease Contamination During Purification of Recombinant Prototype Foamy Virus Integrase
07:50

Detection and Removal of Nuclease Contamination During Purification of Recombinant Prototype Foamy Virus Integrase

Published on: December 8, 2017

7.6K

What makes a prototype a prototype? Averaging visual features in a sequence.

Ke Tong1, Chad Dubé2, Robert Sekuler3

  • 1Department of Psychology, University of South Florida, Tampa, FL, 33620, USA. ketong@mail.usf.edu.

Attention, Perception & Psychophysics
|May 3, 2019
PubMed
Summary
This summary is machine-generated.

Recent stimuli influence visual averaging more than older ones, challenging traditional prototype models. This recency effect in visual perception varies by stimulus type, suggesting a need to revise how we understand perceptual averaging.

Keywords:
Ensemble representationPerceptual categorizationPrototype modelSummary statistical representationVisual short-term memory

More Related Videos

Assembly and Purification of Prototype Foamy Virus Intasomes
10:20

Assembly and Purification of Prototype Foamy Virus Intasomes

Published on: March 19, 2018

5.9K
High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods
07:51

High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods

Published on: December 23, 2013

7.8K

Related Experiment Videos

Last Updated: Jan 25, 2026

Detection and Removal of Nuclease Contamination During Purification of Recombinant Prototype Foamy Virus Integrase
07:50

Detection and Removal of Nuclease Contamination During Purification of Recombinant Prototype Foamy Virus Integrase

Published on: December 8, 2017

7.6K
Assembly and Purification of Prototype Foamy Virus Intasomes
10:20

Assembly and Purification of Prototype Foamy Virus Intasomes

Published on: March 19, 2018

5.9K
High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods
07:51

High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods

Published on: December 23, 2013

7.8K

Area of Science:

  • Cognitive Psychology
  • Computational Neuroscience
  • Visual Perception

Background:

  • Humans can form average representations of visual features from sequential stimuli.
  • The computational mechanisms underlying this averaging process are not fully understood.
  • Conventional prototype models assume equal weighting of all stimuli.

Purpose of the Study:

  • To investigate how running averages of visual features are computed.
  • To test whether recent stimuli are weighted more heavily than older stimuli in averaging.
  • To examine if stimulus type affects the weighting of recent information.

Main Methods:

  • Subjects estimated running averages of visual features (line length, numerals).
  • Stimulus distributions were altered mid-series to test computational models.
  • Performance was compared between a recency-weighted model and an equal-weight model.

Main Results:

  • A model weighting recent stimuli more heavily outperformed an equal-weight model.
  • Recency-weighted averaging was consistently observed for line length stimuli.
  • Less recency prioritization was found when averaging numerals.

Conclusions:

  • Prototype models may rely on unrealistic assumptions about stimulus weighting.
  • A reassessment of prototype models for visual memory and categorization is warranted.
  • Perceptual averaging mechanisms exhibit stimulus-dependent recency effects.