To me it was the concept of interoception which produced the stronger callback to Buddhist themes, in this case to the notion of "sixth inner sense" commonly referred to in Pali Buddhist scriptures:
> In Buddhism, "mind" denotes an internal sense organ which interacts with sense objects that include sense impressions, feelings, perceptions and volition.[0]
I have always found this sixth sense organ a welcome –and even necessary– addition to the regular Western list of senses, as without it it is impossible to account for the bountiful nature of our inner experiences (and our perception of them, which evidently foregoes the five other physical senses). I am really glad to see we have a somewhat established (if not very well-known) comparative concept to use in the scientific framework of understanding.
[0]: https://en.wikipedia.org/wiki/%C4%80yatana
edit: typo and missing word