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

Detection of Black Holes01:10

Detection of Black Holes

Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...

You might also read

Related Articles

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

Sort by
Same author

Making time for a dynamic attentional priority map.

Trends in cognitive sciences·2026
Same author

Biasmapping: Idiosyncratic covert search in the vicinity of fixation.

Journal of experimental psychology. Human perception and performance·2026
Same author

The Shape of Saccade-based Functional Visual Fields (FVFs): A cautionary note.

Attention, perception & psychophysics·2026
Same author

A common signal-strength factor limits awareness and precise knowledge of multiple moving objects across the adult lifespan.

Cognition·2026
Same author

Validation and optimisation of a commercial cell-based assay for detection of nodo-paranodal antibodies.

Pathology·2025
Same author

Incidental Learning of Temporal and Spatial Associations in Hybrid Search.

Visual cognition·2025
Same journal

Mind wandering during first- and foreign-language reading.

Psychonomic bulletin & review·2026
Same journal

Lexical word processing is unaffected by rapid invisible frequency tagging in reading: Evidence from eye movements.

Psychonomic bulletin & review·2026
Same journal

Anxiety modulates voluntary attentional orienting to emotional gaze cues: Eye movements for pro- and anti-saccades.

Psychonomic bulletin & review·2026
Same journal

Faster key-press responses to front vowels than back vowels when matching heard vowels with represented vowels.

Psychonomic bulletin & review·2026
Same journal

Testing the interleaving effect without response bias: A forced-choice reevaluation of Kornell and Bjork (2008).

Psychonomic bulletin & review·2026
Same journal

The impact of social interaction on abstract concepts.

Psychonomic bulletin & review·2026
See all related articles

Related Experiment Video

Updated: May 19, 2026

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
11:28

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles

Published on: October 1, 2014

How do we track invisible objects?

Todd S Horowitz1, Randall S Birnkrant, David E Fencsik

  • 1Visual Attention Laboratory, Brigham and Women's Hospital, 64 Sidney Street, Suite 170, Cambridge, MA 02139, USA. toddh@search.bwh.harvard.edu

Psychonomic Bulletin & Review
|October 20, 2006
PubMed
Summary
This summary is machine-generated.

Observers can track multiple objects even when they vanish temporarily. Simultaneous disappearance aids tracking more than asynchronous disappearance, suggesting a task-switching mechanism rather than occlusion processing.

More Related Videos

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish
14:58

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish

Published on: April 6, 2019

Harmonic Radar Tags for Insect Tracking: Lightweight, Low-cost, and Accessible
14:44

Harmonic Radar Tags for Insect Tracking: Lightweight, Low-cost, and Accessible

Published on: May 13, 2025

Related Experiment Videos

Last Updated: May 19, 2026

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
11:28

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles

Published on: October 1, 2014

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish
14:58

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish

Published on: April 6, 2019

Harmonic Radar Tags for Insect Tracking: Lightweight, Low-cost, and Accessible
14:44

Harmonic Radar Tags for Insect Tracking: Lightweight, Low-cost, and Accessible

Published on: May 13, 2025

Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Attention

Background:

  • Multiple object tracking (MOT) involves following several moving targets among distractors.
  • Previous research showed tracking is possible during brief, simultaneous disappearances.
  • Observers may interpret temporary vanishings as occlusion events.

Purpose of the Study:

  • To investigate how observers maintain tracking during temporary object disappearances.
  • To test whether temporal gaps are treated as occlusion events.
  • To explore the underlying cognitive mechanisms of tracking during vanishings.

Main Methods:

  • Experiment 1: Compared tracking performance with simultaneous versus asynchronous object disappearance.
  • Experiment 2: Assessed the effect of occlusion cues (deletion/accretion) on tracking during disappearances.
  • Participants performed MOT tasks with varying disappearance conditions.

Main Results:

  • Tracking performance was better with simultaneous than asynchronous disappearances.
  • Occlusion cues (deletion and accretion) impaired tracking performance.
  • Simultaneous disappearance facilitated target maintenance.

Conclusions:

  • Observers do not treat temporal gaps in MOT as occlusion events.
  • A task-switching account, involving storing and resuming task states, explains performance during vanishings.
  • This suggests a memory-based mechanism for maintaining tracking information over brief interruptions.