Related Experiment Video
Updated: Jun 30, 2026

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
Processing 3D form and 3D motion: respective contributions of attention-based and stimulus-driven activity
A-L Paradis1, J Droulez, V Cornilleau-Pérès
1CNRS, UPR640, Laboratoire de Neurosciences Cognitives et Imagerie Cérébrale, 75013 Paris, France. anne-lise.paradis@chups.jussieu.fr
This study reveals distinct brain regions for 3D form and 3D motion perception. Attentional selection for these attributes involves both facilitatory and suppressive neural mechanisms.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Visual Perception
Background:
- Structure-from-motion (SfM) perception involves processing 3D form and 3D motion.
- Understanding the neural basis of attribute segregation and attention's role is crucial.
Purpose of the Study:
- To segregate neural substrates for 3D form and 3D motion in SfM perception.
- To disentangle stimulus-driven versus attention-driven processing of these attributes.
Main Methods:
- Independent manipulation of attention and visual stimulus attributes (form, 3D motion, color).
- fMRI BOLD activity measured during attended and unattended attribute transitions.
- Comparison of neural activity across stimulus-driven, attention-driven, and combined conditions.
Main Results:
- A dorsal/ventral segregation was observed for form and 3D motion processing.
- 3D motion processing involved high-level areas (IPL, STS), distinct from typical motion areas.
- Neural processing dissociated between unattended attributes and endogenous attentional selection.
- Attribute-selective areas showed increased activity for attended transitions and decreased activity for unattended competing attributes.
Conclusions:
- Neural processing of 3D form and 3D motion is segregated along dorsal/ventral pathways.
- Attention-driven selection involves both facilitatory and suppressive neural mechanisms.
- Attentional selection's functional localization differs from simple stimulus modulation.
More Related Videos
06:46Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
Published on: March 18, 2019
09:37Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
Published on: July 5, 2015
Related Concept Videos
Parallel Processing
Motor and Sensory Areas of the Cortex
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.
Association Areas of the Cortex
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,...
Perception
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...