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Related Concept Videos

Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

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 the...
Diencephalon: Anatomical Regions01:30

Diencephalon: Anatomical Regions

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 subthalamic...
Functional Brain Systems: Reticular Formation01:13

Functional Brain Systems: Reticular Formation

The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
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.
Cerebrum: Anatomical Overview II01:11

Cerebrum: Anatomical Overview II

Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...
Organization of the Brain01:30

Organization of the Brain

The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
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[Neurobiology of neuronal circuits invoved in depression].

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Related Experiment Video

Updated: May 14, 2026

Modification of a Colliculo-thalamocortical Mouse Brain Slice, Incorporating 3-D printing of Chamber Components and Multi-scale Optical Imaging
06:05

Modification of a Colliculo-thalamocortical Mouse Brain Slice, Incorporating 3-D printing of Chamber Components and Multi-scale Optical Imaging

Published on: September 18, 2015

[The "thalamus-cerebral cortex" anatomofunctinal unit in the waking state].

Fernando Reinoso Suárez

    Anales De La Real Academia Nacional De Medicina
    |January 29, 2013
    PubMed
    Summary

    The ascending reticular activating system awakens the thalamus-cerebral cortex unit using neurotransmitter synergies. This system is crucial for wakefulness, cognitive processes, and behavioral responses.

    Area of Science:

    • Neuroscience
    • Neurobiology
    • Cognitive Science

    Background:

    • The "thalamus-cerebral cortex unit" is activated by the "ascending reticular activating system" (ARAS).
    • The ARAS originates from neuronal groups in the brainstem, hypothalamus, and basal forebrain.
    • These neuronal groups utilize known neurotransmitters and exhibit higher activity during wakefulness.

    Discussion:

    • Synergies among multiple neurotransmitters are essential for the cortical and thalamic activation characteristic of wakefulness.
    • The "thalamus-cerebral cortex unit" facilitates interconnectedness between the thalamus and cortex.
    • This intricate network modulates and organizes neural mechanisms for optimal thalamic and cortical activity.

    Key Insights:

    • Wakefulness is actively generated by the ARAS, involving complex neurotransmitter interactions.

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    Last Updated: May 14, 2026

    Modification of a Colliculo-thalamocortical Mouse Brain Slice, Incorporating 3-D printing of Chamber Components and Multi-scale Optical Imaging
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  • The "thalamus-cerebral cortex unit" plays a pivotal role in organizing cognitive functions.
  • Proper functioning of this unit is critical for appropriate behavioral responses.

    • Outlook:

    • Further research into neurotransmitter synergies could reveal novel therapeutic targets for sleep and arousal disorders.
    • Understanding the "thalamus-cerebral cortex unit" may advance treatments for cognitive impairments.
    • Investigating the ARAS offers insights into consciousness and neurological function.