Is consciousness an all-or-none or graded phenomenon? Much research has been devoted to investigate this question for contents of consciousness (e.g. ‘I see a red rose’), but far less for global states of consciousness (e.g. being awake or asleep). Philosopher and experimentalist Jabob Hohwy argues that global states of consciousness do not come in degrees or ‘levels’, but rather in modes, i.e., as different ways of being conscious. Capturing the diversity of conscious states requires...