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Related Concept Videos

Lobes of the Cerebrum01:22

Lobes of the Cerebrum

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The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
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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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Cerebrum: Anatomical Overview II01:11

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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...
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The main and largest component of the human brain is the cerebrum. The cerebrum consists of two main parts: the cerebral cortex, an outer layer with wrinkles or folds known as gyri and shallow grooves called sulci, and a deeper region beneath it. The cerebrum divides into two distinct hemispheres and contains five different lobes: the frontal, parietal, temporal, occipital, and insula. The central sulcus separates the frontal and parietal lobes and two functionally important gyri — the...
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Organization of the Brain01:30

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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.
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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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Cortical Thickness and Functional Networks Modules by Cortical Lobes.

Vesna Vuksanović1

  • 1Aberdeen Biomedical Imaging Centre, Institute of Medical Sciences, University of Aberdeen, Aberdeen, Scotland, UK.

Neuroscience
|November 10, 2019
PubMed
Summary
This summary is machine-generated.

This study reveals how brain networks are organized by lobe. Positive correlations in cortical thickness and functional networks indicate within-lobe interactions, while negative correlations suggest between-lobe communication.

Keywords:
cortical thicknessfunctional networkspositive and negative correlations

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Area of Science:

  • Neuroscience
  • Brain Imaging
  • Network Analysis

Background:

  • Understanding the brain's complex organization is crucial for neuroscience.
  • Cortical thickness and functional networks are key aspects of brain structure and function.
  • Previous research has explored network modularity but lacked detailed lobe-specific analysis.

Purpose of the Study:

  • To investigate the topological organization of cortical thickness and functional networks within specific cortical lobes.
  • To map the correlations between cortical thickness and functional networks across the brain.
  • To differentiate between within-lobe and between-lobe interactions based on correlation types.

Main Methods:

  • Analysis of modular organization using cortical surface divisions (frontal, temporal, parietal, occipital).
  • Mapping of overlapping edges between cortical thickness and functional networks.
  • Correlation analysis (positive and negative) to identify interaction patterns.

Main Results:

  • Demonstrated modular organization of cortical thickness and functional networks by lobe.
  • Identified overlapping edges, distinguishing positive and negative correlations.
  • Showcased that positive overlapping edges correspond to within-lobe interactions, and negative edges to between-lobes interactions.

Conclusions:

  • Cortical lobes form distinct modules in brain organization.
  • The interplay between cortical thickness and functional networks varies significantly within and between lobes.
  • This study provides a framework for understanding large-scale brain network organization and communication patterns.