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

Vision01:24

Vision

56.4K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
56.4K
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

5.1K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
5.1K
Association Areas of the Cortex01:21

Association Areas of the Cortex

6.9K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
6.9K
Visual System01:26

Visual System

889
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
889
Eyewitness Memory01:22

Eyewitness Memory

214
Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function...
214
Somatosensory, Motor, and Association Cortex01:24

Somatosensory, Motor, and Association Cortex

1.2K
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
1.2K

You might also read

Related Articles

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

Sort by
Same author

Friend, Not Foe: Lowered Tissue Reactivity to Long-Term Polyimide Implants.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

How the visual brain can learn to parse images using a multiscale, incremental grouping process.

PLoS computational biology·2026
Same author

Gestalt laws enhance the representation of figures over backgrounds in the visual cortex and influence contrast perception.

Scientific reports·2026
Same author

Friend, not Foe: Lowered Tissue Reactivity to Long-Term Polyimide Implants.

bioRxiv : the preprint server for biology·2026
Same author

Large-scale mapping of artificial perceptions for neuroprostheses using spontaneous neuronal activity in macaque and human visual cortex.

Brain stimulation·2025
Same author

Modulatory feedback determines attentional object segmentation in a model of the ventral stream.

PloS one·2025

Related Experiment Video

Updated: Oct 16, 2025

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

8.4K

A neuronal basis of iconic memory in macaque primary visual cortex.

Rob R M Teeuwen1, Catherine Wacongne1, Ulf H Schnabel1

  • 1Department of Vision & Cognition, Netherlands Institute for Neuroscience, Meibergdreef 47, 1105 Amsterdam, the Netherlands.

Current Biology : CB
|October 15, 2021
PubMed
Summary

This study reveals that persistent neural activity in the primary visual cortex (V1) underlies iconic memory in monkeys. This activity mirrors the duration and decay of visual memory, showing how early visual processing supports short-term sensory storage.

Keywords:
attentioniconic memorymonkeyprimary visual cortexworking memory

More Related Videos

Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
08:42

Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex

Published on: February 8, 2020

10.3K
Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients
07:43

Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients

Published on: June 17, 2019

7.9K

Related Experiment Videos

Last Updated: Oct 16, 2025

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

8.4K
Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
08:42

Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex

Published on: February 8, 2020

10.3K
Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients
07:43

Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients

Published on: June 17, 2019

7.9K

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Visual Perception

Background:

  • Iconic memory is a brief sensory buffer holding visual information after stimulus offset.
  • Understanding its neural basis in early visual areas is crucial for explaining visual perception.

Purpose of the Study:

  • To measure iconic memory in monkeys and identify its neural correlates in the primary visual cortex (V1).
  • To determine the duration and decay properties of iconic memory.
  • To investigate the interaction between iconic memory and attention.

Main Methods:

  • Monkeys were presented with brief visual stimuli followed by masks.
  • Stimulus duration and mask timing were varied to assess iconic memory.
  • Neuronal activity in V1 was recorded and correlated with behavioral performance.
  • Attentional effects on iconic memory were examined using post-stimulus cues.

Main Results:

  • Persistent V1 activity after stimulus offset predicted behavioral accuracy.
  • The time course of this V1 activity matched the duration and decay of iconic memory.
  • Attention, cued after stimulus disappearance, enhanced performance only before iconic memory decayed.

Conclusions:

  • Neuronal activity in V1 directly supports iconic memory.
  • The duration and decay of iconic memory are reflected in the persistence of V1 activity.
  • Iconic memory and attention interact within early visual processing stages.