Related Experiment Video
Updated: Jan 30, 2026
07:36
Eye Tracking During Visually Situated Language Comprehension: Flexibility and Limitations in Uncovering Visual Context Effects
Published on: November 30, 2018
16.4K
All-or-None Context Dependence Delineates Limits of FEF Visual Target Selection
Veronica E Scerra1, M Gabriela Costello2, Emilio Salinas3
1Department of Neurobiology and Anatomy, Wake Forest School of Medicine, 1 Medical Center Boulevard, Winston-Salem, NC 27157-1010, USA; Systems Neurobiology Laboratory, Salk Institute for Biological Studies, 10010 N. Torrey Pines Road, La Jolla, CA 92037, USA.
Current Biology : CB
|January 15, 2019
Summary
The frontal eye field's (FEF) motor activity guides accurate visual choices, even without prior visual discrimination. FEF visual cells rely on stimulus saliency for target selection, not just feature content.
Area of Science:
- Neuroscience
- Cognitive Science
- Ophthalmology
Background:
- Perceptual judgments guide eye movements by identifying salient objects in visual scenes.
- The frontal eye field (FEF) plays a role in transforming visual information into motor commands for eye movements.
Purpose of the Study:
- To investigate the role of FEF visual and motor activity in guiding visually informed choices.
- To determine if FEF visual responses are necessary for target-distracter discrimination in decision-making tasks.
- To explore the reliance of FEF visual discrimination on stimulus saliency and attentional allocation.
Main Methods:
- Utilized urgent decision-making tasks.
- Recorded neural activity in the FEF during these tasks.
- Analyzed the relationship between FEF visual and motor neuronal activity and behavioral choices.
Main Results:
- FEF motor activity effectively directed accurate choices independent of FEF visual response discrimination.
- FEF visual cell discrimination of targets and distracters was critically dependent on stimulus saliency.
- Saliency-driven attentional allocation was essential for FEF visual cells to distinguish between targets and distracters.
Conclusions:
- FEF motor circuits can drive accurate visually guided choices without FEF visual input.
- FEF visual target selection is primarily driven by saliency-based attention.
- FEF visual processing may not be crucial for saccadic choices based solely on stimulus features.
Keywords:
attentiondecision makingeye movementsmotor planningoculomotorperceptionsaccadesaliencevisual searchMore Related Videos
Related Concept Videos
01:21Frequency-dependent Selection
23.9K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
23.9K
01:38Limits to Natural Selection
34.9K
Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.
34.9K
01:30Self Within Cultural Contexts
235
Cultural frameworks for understanding the self are often categorized into two broad orientations: individualism and collectivism. These paradigms influence how people define themselves, relate to others, and interpret their social worlds. Each orientation offers distinct perspectives on autonomy, responsibility, and the role of the individual within a community.Individualistic CulturesIn individualistic cultures like North America and Western Europe, identity is understood as autonomous and...
235
02:27Limiting Reactant
70.0K
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in reality, the reactants are not always present in the stoichiometric amounts indicated by the balanced equation.
70.0K
01:29The Number e as a Limit
85
The number e is a fundamental constant in calculus, playing a central role in describing continuous change, particularly exponential growth. It is most naturally defined through its relationship with the natural logarithm, which is the inverse of the exponential function with base e. This relationship allows e to be characterized using basic principles of differentiation rather than as an arbitrary numerical constant.A key property of the natural logarithm function, ln x, is that its derivative...
85
01:21Impact of Social Context on Individuals
318
Social psychology examines how the real or imagined presence of others influences individuals' thoughts, feelings, and behaviors. A key concept in this field is the role of social context in shaping behavior. The same individual may act differently depending on the social setting, due to the varying expectations and norms associated with each environment. This context-dependent behavior illustrates the influence of social roles, which prescribe appropriate conduct in specific situations.Social...
318