Rolandicadj.
/rəʊˈlandɪk/, U.S. /ˌroʊˈlændɪk/ Anatomy.
Designating the central sulcus (fissure of Rolando) (see Rolando n.) or features of the brain associated with this, esp. the motor area of the precentral gyrus and the angle at which the central sulcus meets the median plane of the brain.
ΘΚΠ
the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [adjective] > fissure
subcentral1828
paracentral1878
Rolandic1878
transinsular1889
transtemporal1889
1878 Med. Press & Circular 16 Jan. 41/1 To reach it we must advance two centimetres from the middle of the Rolandic line.
1881 C. G. Comegys tr. J. M. Charcot Lect. Dis. Spinal Cord v. 49 We have enclosed within these pyramidal lines, what is known as the Rolandic region of the cerebral cortex, and which represents..a region endowed with special physiological properties.
1910 G. G. Davis Appl. Anat. 36 The Rolandic area embraces the ascending frontal, or precentral, and posterior portion of the three frontal convolutions, the former being in front of the fissure of Rolando, or central fissure.
1962 M. C. H. Dodgson Growing Brain vii. 55 The determination of Cunningham's Rolandic Index may be useful in doubtful instances.
1972 M. L. Barr Human Nerv. Syst. xiii. 207 The rolandic sulcus indents the superior border of the hemisphere about 1 cm behind the midpoint between the frontal and occipital poles.
1992 Sci. Amer. (U.K. ed.) Sept. 93/2 The anterior perisylvian sector, on the front side of the rolandic fissure, appears to contain structures that are responsible for speech rhythms and grammar.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).
<
adj.1878