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The Mechanisms Underlying Conscious Awareness

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Introduction The mechanisms underlying conscious awareness and the exact nature of conscious experience still remain incomprehensible, despite increasing attention paid to it within the last decades. Moreover, it seems that we are not aware of many of the things that we perceive and such experiences have been termed as “unconscious”. Many psychological experiments have tried to prove the existence of unconscious perceptual processes by demonstrating that subjects are not consciously aware of stimuli, which nevertheless are perceived. A perception in the absence of conscious experience is often referred to as subliminal perception. Peirce and Jastrow (1885) were first to suggest that even stimuli …show more content…

Dienes et al. (1995) have proposed “the zero correlation criterion” and “the guessing criterion” as tests for such conscious and unconscious processing. When analysing using the zero criterion one assumes that any positive relationship between performance and awareness indicates some conscious performance. The guessing criterion is used to assess the performance on those trials where participants claim to be guessing and if they perform above chance, it could be concluded that their performance is based on knowledge they are not aware of having (unconscious knowledge). Objective measures can show us whether someone correctly identified previously presented stimuli, but do not really tell us how stimuli were experienced. Someone could chose a correct answer after consciously perceiving only part of stimulus (e.g., a straight vertical line of a square) if this part triggered the relevant knowledge related to the shape containing this particular part. Subjective measures on the other hand can tell us a bit more about the nature of our conscious experiences. Ramsoy and Overgaard (2004) in their study asked participants to create their own categories for subjective reports of experienced stimuli. A scale with four categories describing how stimuli were experienced in terms of clarity was created. This scale was called The

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