International human rights institutions and scholars are debating whether established human rights suffice to address challenges raised by neurotechnologies which measure or alter brain activity; UNESCO intends developing a novel standard-setting instrument for neurotechnologies. This paper analyses how core human rights pertain to neurotechnologies and might be interpreted in this context. Contrary to claims about gaps in the law, several rights, especially the underexplored rights to mental integrity and freedom of thought, as well as some features of human dignity provide resources to protect persons against reading their minds or tampering with their brains against their will. Proposals for the construction of these rights are submitted. They specify and actualise the multi-layered protection of the person that core human rights provide.