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Related Concept Videos

Parallel Processing01:20

Parallel Processing

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...
Vision01:24

Vision

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.
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

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.
Visual System01:26

Visual System

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...
Association Areas of the Cortex01:21

Association Areas of the Cortex

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,...

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Related Experiment Video

Updated: May 19, 2026

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

Intermodal attention modulates visual processing in dorsal and ventral streams.

A D Cate1, T J Herron, X Kang

  • 1Psychology Department, Virginia Polytechnic Institute and State University, 109 Williams Hall, Blacksburg, VA 24061, USA. acate@vt.edu

Neuroimage
|August 25, 2012
PubMed
Summary
This summary is machine-generated.

Visual attention modulates brain activity in higher visual areas. Selecting visual input, even without competing visual stimuli, impacts processing in the intraparietal sulcus and occipitotemporal sulcus.

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Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

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Related Experiment Videos

Last Updated: May 19, 2026

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

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Published on: April 16, 2014

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

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Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Visual Perception

Background:

  • Selecting sensory information is crucial for complex tasks, but how this selection impacts visual processing remains unclear.
  • Previous research has not fully elucidated the effects of intermodal selective attention on cortical activity, especially without direct visual competition.

Purpose of the Study:

  • To investigate how attending to visual information, while ignoring auditory input, affects neural processing in the visual cortex.
  • To determine the specific roles of different visual brain regions in intermodal selective attention.

Main Methods:

  • Utilized an audio-visual intermodal selective attention paradigm.
  • Employed functional magnetic resonance imaging (fMRI) to measure cortical activity.
  • Presented complex visual stimuli (faces and words) under attended and unattended conditions.

Main Results:

  • Stimulus-dependent activations (SDAs) were observed in higher visual areas, including the fusiform gyrus and intraparietal sulcus (IPS), even without attention.
  • Attention-related modulations (ARMs) amplified responses in posterior visual regions and differentially affected dorsal and ventral pathways.
  • The IPS showed strong, exclusive activation by attention, while a distinct region in the occipitotemporal sulcus (OTS) was also exclusively attention-activated.

Conclusions:

  • The intraparietal sulcus (IPS) and occipitotemporal sulcus (OTS) are critical for intermodal visual attention.
  • Attention significantly modulates activity in higher visual areas, influencing both stimulus-driven responses and attention-specific processing.