Related Experiment Video
Updated: Apr 30, 2026
07:08
Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
Published on: August 1, 2018
7.9K
Neural evidence for sequential selection of object features
Tatiana Aloi Emmanouil1, Hagit Magen2
1Baruch College and Graduate Center, City University of New York, New York, NY, USA.
Trends in Cognitive Sciences
|May 6, 2014
Summary
Attention selects entire objects, amplifying all features. A new magnetoencephalography (MEG) study reveals attention sequentially activates object features, spreading from relevant to irrelevant modules.
Area of Science:
- Cognitive Neuroscience
- Neuroscience
- Psychology
Background:
- Behavioral and neural evidence indicates attention selects entire objects.
- This selection amplifies all object features, irrespective of task relevance.
Purpose of the Study:
- To elucidate the temporal dynamics of object-based attention.
- To investigate how attention spreads across object features using magnetoencephalography.
Main Methods:
- Magnetoencephalography (MEG) was employed to record brain activity.
- Participants' attention was manipulated to study object selection.
Main Results:
- Object features are activated sequentially, not simultaneously.
- Attention spreads progressively from task-relevant to task-irrelevant object modules.
- The temporal course of feature activation was mapped.
Conclusions:
- The findings support a sequential spreading model of object-based attention.
- Attention dynamically modulates neural representations of objects over time.
- This provides new insights into the temporal unfolding of attentional selection.
Related Concept Videos
01:20Parallel Processing
950
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
950
01:26Visual System
2.3K
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...
Once through the pupil, the light passes through the lens, a...
2.3K