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Related Concept Videos

Diencephalon: Hypothalamus and Coordination01:23

Diencephalon: Hypothalamus and Coordination

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The hypothalamus is a small yet highly complex and essential brain region that plays a crucial role in regulating various bodily functions. Anatomically, it is located at the base of the brain, just above the brainstem and below the thalamus, forming part of the limbic system.
The hypothalamus interacts with other brain regions, including the pituitary gland, through a direct physical connection called the hypothalamic-pituitary axis. The hypothalamus receives somatic and visceral inputs and...
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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:
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Functional Brain Systems: Reticular Formation01:13

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The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
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Motor and Sensory Areas of the Cortex01:14

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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....
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Somatosensory, Motor, and Association Cortex01:24

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The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
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Diencephalon: Anatomical Regions01:30

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The diencephalon, etymologically translated as 'through brain,' plays an integral role as the conduit between the cerebrum and the vast extent of the nervous system. However, the olfactory system is an exception, as it interfaces directly with the cerebrum. The diencephalon, deeply ensconced beneath the cerebrum, primarily consists of three paired structures — the thalamus, hypothalamus, and epithelamus. It also includes accessory structures such as the subthalamus, which houses the...
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Related Experiment Video

Updated: Nov 21, 2025

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention
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The human endogenous attentional control network includes a ventro-temporal cortical node.

Ilaria Sani1,2, Heiko Stemmann3, Bradley Caron4

  • 1Laboratory of Neural Systems, The Rockefeller University, 1230 York Avenue, New York, NY, 10065, USA. ilaria.sani@unige.ch.

Nature Communications
|January 16, 2021
PubMed
Summary
This summary is machine-generated.

Researchers identified a new brain region in the temporal lobe that controls attention. This finding expands our understanding of attention networks beyond the fronto-parietal areas.

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Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
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Related Experiment Videos

Last Updated: Nov 21, 2025

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Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Neuroanatomy

Background:

  • Endogenous attention, the goal-directed selection of sensory information, is traditionally linked to dorsal fronto-parietal networks.
  • Existing models primarily focus on fronto-parietal control of attention, potentially overlooking contributions from other brain regions.

Purpose of the Study:

  • To identify novel brain areas involved in the control of endogenous attention.
  • To investigate the functional and anatomical connectivity of newly identified attentional regions with known fronto-parietal networks.

Main Methods:

  • Employed a demanding behavioral paradigm to elicit attentional modulation.
  • Utilized functional neuroimaging (fMRI) to measure brain activity during the task.
  • Applied diffusion tractography to map white matter pathways connecting brain regions.

Main Results:

  • The posterior inferotemporal cortex in the temporal lobe demonstrated significant attentional modulatory activity, similar to fronto-parietal areas.
  • This temporal lobe region was functionally distinct from adjacent cortical areas.
  • Diffusion tractography revealed direct anatomical connections between the posterior inferotemporal cortex and known parietal and frontal attentional regions.

Conclusions:

  • Attentional control involves a distributed network spanning at least three cortical lobes (frontal, parietal, and temporal).
  • Novel long-range fiber pathways connect temporal attentional regions with fronto-parietal networks, suggesting a distinct organizational principle for cognitive control.
  • These findings challenge the traditional view by incorporating the temporal lobe into the cortical network governing endogenous attention.