anonymous
2012-03-15 14:21:11 UTC
The unconscious mind is also thought by some, such as Jung and Tart, to be a reservoir of transcendent truths. There is no scientific evidence that this is true.
It would be absurd to reject the notion of the unconscious mind simply because we reject the Freudian notion of the unconscious as a reservoir of repressed memories of traumatic experiences. We should recognize that it was Freud more than anyone else who forced us to recognize unconscious factors as significant determinants of human behavior. Furthermore, it seems obvious that much, if not most, of one's brain's activity occurs without our awareness. There is no question that we sense many things without being consciously aware of them (see clever Hans phenomenon, for example). There is also no question that unconscious factors can affect behavior or motor action (see ideomotor action, for example). There is little question that many unconscious factors drive such complex phenomena as language ability. Consciousness or self-awareness is obviously the proverbial tip of the iceberg. But most interest in the unconscious mind has been restricted to potentially harmful memories that might be stored or stirring there, memories of bad experiences that influence our conscious behavior even though we are unaware of their impact. Others have shown interest in the unconscious mind as a reservoir of universal truths or a place where the "true self" dwells. Neither of these views seems well supported by the empirical evidence.
It is assumed that the unconscious is distinguished from the conscious by the fact that we are aware of conscious experience, but unaware of the unconscious. However, there is ample scientific data to establish as a fact that some conscious perception goes on without self-consciousness. It is possible to be unaware of having experienced something and unable to remember the experience, but still give evidence that one has had the experience. Several examples should suffice to establish this point.
1. blindness denial. There are cases of brain-damaged people who are blind but who are unaware of it.
2. jargon aphasia. There are cases of brain-damaged people who speak unintelligibly but aren't aware of it.
3. blindsight. There are cases of brain-damaged people who see things but are unaware of it.
4. oral/verbal dissociation. There are cases of brain- damaged people who cannot orally tell you what you just said, but they can write it down correctly. Furthermore, they can't remember what they wrote down or what it refers to.
5. sensing without seeing. There are many cases of people whose brains are not damaged who give evidence that they have seen or heard something even though they are not conscious of having seen or heard the item in question.
Somehow it does not seem appropriate to speak of the first four cases listed here as involving the unconscious mind, even though the perceivers are not aware of what they are perceiving. It might be less confusing to abandon talk of the unconscious mind in such cases and refer instead to "lost memory" or "fragmented memory" or "implicit memory" (a term coined by Daniel Schacter and Endel Tulving). It is not repression of traumatic experiences that causes memories to be lost. Memories are lost because of inattentiveness in the original experience and because the original experience occurred at an age when the brain was not fully developed. Memories are also lost because we have no recognizable need to reference the original experience. (Many fragments of pleasant experiences, such as the name of a place or a product, may be influencing present choices without one's being aware of it.) Memories are lost because of brain damage, loss of consciousness during an experience, neurochemical imbalance, cognitive restructuring, and sensory, emotional or hormonal overload. On the other hand, all the empirical evidence indicates that the more traumatic an experience the more likely one is to remember it. Novel visual images, which would frequently accompany traumas, stimulate the hippocampus and left inferior prefrontal cortex and will generally become part of long-term memory.
Neuroscience tells us that a memory is a set of connections among groups of neurons that participate in the encoding process. Encoding can take place in several parts of the brain. Neural connections