The phrase "insular part" is correct and usable in written English.
It can be used to describe a section or aspect that is isolated or separate from the rest, often in a geographical or metaphorical context.
Example: "The insular part of the island is home to unique wildlife that cannot be found elsewhere."
Alternatives: "isolated section" or "secluded area".
The brothers grew up sharing a room in the Old Harbor housing project in South Boston, a part of the city that has long been a proud and defiant state of mind, as well as one of the most insular parts of Boston, a peninsula that juts into the Atlantic.
Himmerland, region of Jutland between Hobro and Ålborg, forming the northernmost non-insular part of Denmark.
The Occupy activists see them as secretive and insular, as part of the problem.
This was particularly the case in the left insular, a part of the brain thought to handle unfamiliar words before they can be laid down in long-term memory.
A first result obtained with diffusion tensor tractography in a 27-year-old male gorilla indicated connectivity of the insular region cointaining VENs with the frontal pole, as well as other parts of frontal and insular cortex, the septum and the amygdala, and close examination of the reported images also suggests a connection with ACC [Allman et al., 2010].
In our study, we observed a significant activation of the anterior insular cortex (rostral part), which matches the portion of the insula where encoding of perceived intensity of experimental pain in healthy volunteers has been consistently described in some previous studies [ 56].
A longer response time in the Stroop-color test was correlated with decreased GM volume of the right posterior lobe and decreased WM volumes of the right frontal subgyral and insular areas and part of the left sublobar region in the control group (corrected P < 0.01) and Table 5).
The son of a cop and a real estate agent, Brady grew up in the insular blue-collar part of the Hamptons that summer residents seldom see.
