There are a variety of notions as to what consciousness is. Some people denote consciousness simply as the difference between being awake/aware and asleep/unaware. Neuroscience posits consciousness as being various neural oscillations (Block 2002), but is still unclear as to how meaning is generated in the brain (Crick and Koch 1998). One of the most important features of consciousness, its subjectivity, is reported by Searle to be a neurobiological process (Searle 1980), or the notion of ‘what it is like to be’ by Thomas Nagel (Nagel 2002). According to Ned Block (2002), various notions of consciousness cause confusion and Block’s paper, Concepts of Consciousness, wishes to clarify and define consciousness through separating it into two distinct categories- phenomenal consciousness and access consciousness. This essay will argue that Block fails to establish such a separation which does not help his cause of clarification.

Block (2002, p.206) describes the concept of consciousness…

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