Main mind (Tib. གཙོ་སེམས་, tso sem, Wyl. gtso sems), in Buddhist psychology and epistemology, refers to the six consciousnesses | six or eight consciousnesses | eight sets of consciousness. It is distinguished from the mental states or processes, usually listed as fifty-one mental states | fifty-one in number<ref>According to Asanga’s system. Vasubandhu lists forty-six.</ref>, which are said to perceive the features of objects, while main mind perceives only their basic identity.
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