(by Joe)
Lucid
dreaming refers to the experience of being aware and in control of
your dreams. The term was coined by Frederik van Eeden (1913), who
discusses his own numerous experiences of such dreams. Snyder
& Gackenbach (1988) report that only 20% of the population
naturally experience regular lucid dreams, although it is also
possible to induce them artificially. The precise neural mechanism
behind them is not fully understood, but there appear to be distinct
neurobiological differences between regular dreams and lucid dreams.
In any case, lucid dreaming presents us with a number of intriguing
philosophical puzzles, as well as potential insights into the nature
of consciousness.
I
am particularly interested in whether the experience a lucid dreamer
has of being in control of their dream is genuine, or whether it is
merely an experience. It
seems quite possible that when a lucid dreamer reports being able to
choose how their dream progresses, all they are actually reporting is
the sensation of being in control. Studies into schizophrenia and
related disorders such as alien hand syndrome suggest that 'being in
control' and 'experiencing being in control' are distinct phenomena.
So we should not necessarily take a lucid dreamer's word for it when
they say that they are in control of their dreams – although it
would be difficult to deny that they at least experience or recall
being in control.
Stephen
LaBerge has conducted extensive research into lucid dreaming,
including systematising the use of eye-movements to establish contact
between a lucid dreamer and an experimenter (see, for example,
LaBerge 2000). The fact that a lucid dreamer can communicate in what
appears to be a purposeful manner would seem to validate their claim
of being in control of the dream. Kahan & LaBerge (1994) use such
evidence to suggest that the traditional distinction between
non-conscious dreaming and conscious wakefulness might be flawed.
Whilst they take the control of lucid dreamers as a given, one might
instead want to question the way in which conscious control is being
classified in the first place.
In
a famous series of experiments Benjamin Libet discovered that the
conscious decision to press a button was reported to occur several
hundred milliseconds after
the neural activity that was associated with the action began (Libet
et al, 1979). The
experiments were widely reported to disprove free will, but Daniel
Dennett has offered a more subtle explanation. We only have access to
the subject's reported experience of initiating the button push, and
it might be possible that their decision to push the button actually
precedes their conscious experience of control (1991: 154-162). Of
course this calls into question the very definition of consciousness,
but that is Dennett's intention. Given that there's no homuncular
'centre' to the brain, it might be that decision making occurs
separately to conscious awareness of decision making, or that we
rapidly lose track of having consciously made a decision.
Similarly,
experience of control as reported by lucid dreamers does not
unambiguously equal actual control. Whilst Dennett is keen to retain
the possibility of free will, others might not be so happy with the
apparent detachment of conscious awareness from the actual initiation
of actions. When a lucid dreamer tells us that they are able to
control their dreams, it would be more accurate to say that they have
experienced being in control of their dreams. Whether they actually
have, and what that even means, is a much more difficult question to
answer.
Dennett,
D.
1991.
Consciousness
Explained.
Little,
Brown
and
Company.
Kahan,
T. L., & LaBerge, S. 1994. “Lucid dreaming as metacognition:
implications for cognitive science.” Consciousness and
Cognition, 3/4: 246-264.
LaBerge,
S. 2000. “Lucid dreaming: Evidence and methodology”. Behavioral
and Brain Sciences, 23/6: 962-3.
Libet,
B., Wright, E., Feinstein, B., and Pearl, D. 1979. “Subjective
Referral of the Timing for a Conscious Sensory Experience.” Brain,
102: 193-224.
Snyder,
T. & Gackenback, J. 1988. In
J. Gackenbach & S. LaBerge
(Eds.), Conscious Mind, Dreaming Brain: 221-259.
New York: Plenum Press.
Van
Eeden, F. 1913. “A study of dreams.” Proceeding of the Society
for Psychical Research, 26:
431-416.
[...]Lucid dreaming is a state wherein the dreamer is aware that they are dreaming. [...]
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