What is hippocampal malrotation?
Abstract. BACKGROUND AND PURPOSE: Hippocampal malrotation (HIMAL) is a failure of hippocampal inversion that occurs during normal fetal development and has been seen on MR imaging examinations of people with epilepsy, but it has not been studied in patients without epilepsy.
What does Incomplete hippocampal inversion mean?
Incomplete hippocampal inversion (IHI) is an anatomical variant of the human brain resulting from an arrest in brain development, especially prevalent in the left hemisphere. We hypothesized that IHI is more common in schizophrenia and contributes to the well-known hippocampal structural differences.
What is incomplete inversion?
Incomplete hippocampal inversion is an anatomic pattern whereby the hippocampus is more rounded, vertical and medially positioned than normal. It is often accompanied by a deep collateral sulcus.
What is hippocampal sulcus?
The hippocampal sulcus is the inferior lateral extension of the transverse fissure (of Bichat), which in turn communicates with the ambient cistern. It is a shallow groove on the medial surface of the hippocampus, between the dentate gyrus and subiculum, inferior to the fimbria and fimbriodentate sulcus 1.
What is hippocampal malformation?
Abstract. Hippocampal malrotation (HIMAL) is an increasingly recognized neuroimaging feature but the clinical correlation and significance in epilepsies remain under debate. It is characterized by rounded hippocampal shape, deep collateral, or occipitotemporal sulcus, and medial localization of the hippocampus.
What is left hippocampal Malrotation?
HIMAL is a developmental malformation that predominantly affects the left hippocampus in males, and is more frequently found in children with prolonged FSE than in controls. These data provide further evidence that HIMAL represents a pathological error in brain development rather than a normal variant.
What is the hippocampus?
Hippocampus is a complex brain structure embedded deep into temporal lobe. It has a major role in learning and memory. It is a plastic and vulnerable structure that gets damaged by a variety of stimuli. Studies have shown that it also gets affected in a variety of neurological and psychiatric disorders.
What does the left hippocampus control?
The primary function of the hippocampi is to consolidate semantic memory. The left and right hippocampi encode verbal and visual-spatial memories, respectively.
What is hippocampal remnant cyst?
Hippocampal sulcus remnant cysts, also known as hippocampal cavities, are remnants of incomplete involution of the embryonic hippocampal fissure and are an incidental finding.
Is hippocampus damage reversible?
Recovering from Hippocampus Damage An injury to the hippocampus can cause serious memory problems. But fortunately, physical and cognitive exercises can help reverse some of the worst effects of hippocampus damage and improve your memory skills.