Related Experiment Video
Updated: May 3, 2026
10:41
VisualEyes: A Modular Software System for Oculomotor Experimentation
Published on: March 25, 2011
12.2K
Neural basis of non-conscious visual working memory
Agneish Dutta1, Kushal Shah1, Juha Silvanto2
1Imperial College London, Department of Medicine, Division of Brain Sciences, London, UK.
Neuroimage
|January 21, 2014
Summary
High-level cognitive tasks can be performed without conscious awareness. Neuroimaging and neurostimulation reveal the prefrontal cortex supports these implicit working memory processes.
Area of Science:
- Cognitive neuroscience
- Neuroimaging
- Neurostimulation
Background:
- Human observers can perform complex cognitive tasks without conscious awareness.
- The neural mechanisms underlying this phenomenon are not fully understood.
Purpose of the Study:
- To investigate the neural basis of cognitive tasks performed independently of conscious awareness.
- To determine if the prefrontal cortex supports implicit working memory processes.
Main Methods:
- Utilized neuroimaging techniques to observe brain activity.
- Employed neurostimulation to investigate the role of specific brain regions.
- Examined performance on high-level cognitive tasks under conditions of non-conscious information processing.
Main Results:
- The dorsolateral and anterior prefrontal cortex were found to operate on non-conscious information.
- This processing extends beyond automatic sensorimotor priming.
- Evidence suggests a role in implicit working memory and higher-level cognition.
Conclusions:
- The prefrontal cortex plays a crucial role in supporting cognitive functions without conscious awareness.
- Findings suggest the existence of implicit working memory mechanisms.
- This research advances our understanding of the neural basis of consciousness and cognition.
More Related Videos
09:37Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
Published on: July 5, 2015
8.8K
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
8.8K
Related Concept Videos
01:24Working Memory
1.3K
Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
1.3K
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
01:24Vision
48.6K
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.
48.6K
01:15Subconsciousness and No Awareness
864
The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
864
01:12Visual Agnosia
2.0K
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
2.0K
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