Lateral Occipitotemporal Gyrus Of The Brain, Anatomy

Description

Lateral occipitotemporal gyrus (gyrus occipitotemporalis lateralis) occupies the inferolateral surface of the temporal and occipital lobes as an elongated cortical ridge running anteroposteriorly. Superiorly it is bordered by the inferior temporal sulcus, separating it from the inferior temporal gyrus on the lateral convexity. Inferiorly and slightly medially, the occipitotemporal sulcus is typically encountered as the next groove toward the basal temporal surface, with the collateral sulcus lying further medial near the parahippocampal region. Posteriorly, the gyrus approaches the occipital cortex near the occipital pole. A long, low ridge. Ventral occipitotemporal cortex forms a core segment of the visual association network, where lesions, contusions, or posterior cerebral artery infarcts can disturb high-level visual processing such as object recognition, word-form processing, or face perception depending on laterality and exact cortical extent. Neurosurgeons and epileptologists also reference this gyrus when describing ventral temporal seizure onset zones and defining subpial or transcortical corridors that avoid deeper white matter trajectories like the inferior longitudinal fasciculus. The fixed perspective clarifies sulcal boundaries that often confuse learners when inferior temporal, occipitotemporal, and collateral sulci are conflated across atlases and MRI labeling conventions. Use this illustration in medical neuroanatomy teaching, neuropsychology lectures on the ventral visual stream, and figure plates for neuroradiology reports that localize cortical lesions to the inferior temporal and occipitotemporal region. It also suits neurosurgical and epilepsy publications that need consistent terminology for basal temporal cortical targets and margins of resection. Anatomical accuracy verified by SciePro's Medical Advisory Board.