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Steve Joordens

Chapter 9 Consciousness  Consciousness as a Social Phenomenon o Can we understand consciousness  Three philosophical positions about nature of consciousness  Consciousness is not a natural phenomenon  Consciousness is a natural phenomenon but also that, for various reasons, we cannot understand it  People are indeed conscious, that this consciousness is produced by the activity of the human brain, and that there is every reason for us to be optimistic about our ability to understand this phenomenon(advocated by Hebb) o The adaptive significance of consciousness  Consciousness is the awareness of these processes, not the processes themselves  Blindsight: the ability to interact behavior with objects while remaining consciously unaware of them  Our ability to communicate provides us with self-awareness o Consciousness and the ability to communicate  The ability to communicate with ourselves symbolically gives rise to consciousness  Cheesman and Merikle(1986) presented people with a ward that was either congruent or incongruent with the color of a subsequent patch of color. It shows a Stroop-like effect o Consciousness and the control of behavior  Goodale and his colleagues have evidence have evidence that our actions are little affected by such visual illusions.(figure 9.1)  Selective Attention: the process that controls our awareness of , and readiness to respond to, particular categories of stimuli in a particular location o Auditory information  Dichotic listening: A task that requires a person to listen to one of two different messages being presented simultaneously, one to each ear, through headphones  Figure9.3, 9.4 o Visual information  Location of information  Figure 9.6  The nature of information  Figure 9.7  The meaningfulness of the information  Change blindness: failure to detect a change when vision is interrupted by a saccade or an artificially produced obstruction  Inattentional blindness: failure ot perceive an event when attention is diverted elsewhere o Figu
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