occipital gyrus

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Thân thiện
occipital gyrus

A student points to the occipital gyrus on a diagram of the human brain.

Definition
  1. Noun:
    • A convolution on the outer surface of the occipital lobe of the cerebrum: The "occipital gyrus" refers to any of the raised, ridge-like folds of the brain's cortex located in the occipital lobe, which is the region at the back of the brain primarily responsible for visual processing.
Usage
  • The term "occipital gyrus" is used in anatomical, neurological, and medical contexts to describe specific structural features of the brain. It is a precise scientific term.
  • Example: "The MRI scan revealed increased activity in the left occipital gyrus during the visual stimulus test."
  • Example: "Damage to a specific occipital gyrus can result in distinct types of visual field deficits."
Advanced Usage
  • "Primary visual cortex (V1) located in the calcarine sulcus, which is on the medial surface of the occipital lobe, is often not referred to as a simple gyrus but is surrounded by occipital gyri.": This highlights that the most critical visual area is within a sulcus (a groove), while the term "occipital gyrus" typically refers to the visible surface convolutions.
  • "The lunate sulcus is a landmark that often borders certain occipital gyri.": Anatomical landmarks help define the boundaries of these brain folds.
Variants and Related Words
  • Occipital lobe (n): The entire brain lobe at the posterior part of the cerebrum, housing the visual cortex. The occipital gyrus is a part of this lobe.
  • Gyrus (n): A general term for a ridge or fold on the cerebral cortex. "Occipital gyrus" is a type of gyrus.
  • Sulcus (n): The groove or furrow between two gyri. Gyri and sulcus work together to increase the brain's surface area.
Synonyms
  • Brain convolution (in the occipital lobe): A more descriptive synonym, though less precise.
  • Occipital cortex fold: A non-technical paraphrase describing the same structure.
Related Terms (Not Phrasal Verbs or Idioms)
  • Visual cortex: The area of the occipital lobe responsible for processing visual information, which encompasses specific gyri and sulci.
  • Calcarine sulcus: A major sulcus in the occipital lobe where the primary visual cortex is located.
  • Lingual gyrus: A specific gyrus on the medial (inner) surface of the occipital lobe involved in visual processing.
occipital gyrus

A student points to the occipital gyrus on a diagram of the human brain.

Noun
  1. any of the convolutions of the outer surface of the occipital lobe of the cerebrum