Citation, DOI & article data
The Meyer loop (also sometimes known as Archambault loop) is part of the inferior optic radiation that sweeps back on itself into the temporal lobe, just lateral to the temporal horn of the lateral ventricle. It can be injured in temporal lobectomy, resulting in a superolateral field cut, the so-called pie-in-the-sky field cut.
History and etymology
The anatomy of the optic radiation had been described with various levels of details in the latter half of the 19th century by Louis Pierre Gratiolet and Francois Leuret (1854), Paul Emil Flechsig (1896), and LaSalle Archambault (1906) 3.
In 1907 4, Adolf Meyer (1866-1950), a Swiss-born American neuropsychiatrist and neuroanatomist, built upon this earlier work and unequivocally demonstrated the loop of the optic radiation that passes into the temporal pole 3,5.
- 1. Barton JJ, Hefter R, Chang B, Schomer D, Drislane F "The field defects of anterior temporal lobectomy: a quantitative reassessment of Meyer's loop" Brain. 2005 Sep;128(Pt 9):2123-33. Epub 2005 May 25.
- 2. Taoka, T., Sakamoto, M., Nakagawa, H. et al "Diffusion Tensor Tractography of the Meyer Loop in Cases of Temporal Lobe Resection for Temporal Lobe Epilepsy: Correlation between Postsurgical Visual Field Defect and Anterior Limit of Meyer Loop on Tractography" AJNR Am J Neuroradiol 2008 29: 1329-1334
- 3. Goga C & Türe U. The Anatomy of Meyer's Loop Revisited: Changing the Anatomical Paradigm of the Temporal Loop Based on Evidence from Fiber Microdissection. JNS. 2015;122(6):1253-62. doi:10.3171/2014.12.jns14281 - Pubmed
- 4. Meyer A: The connections of the occipital lobes and the present status of the cerebral visual affections. Trans Assoc Am Physicians 22:7–16, 1907
- 5. Schijns O & Koehler P. Adolf Meyer: The Neuroanatomist and Neuropsychiatrist Behind Meyer's Loop and Its Significance in Neurosurgery. Brain. 2019;143(3):1039-44. doi:10.1093/brain/awz401 - Pubmed