Dreaming Flashcards
Waves
waves show there is something special about REM sleep and REM dreams
Foulkes and Scott 1973
found 24% of daydreams were described like dreams
Foulkes and Fleisher 1975
- 19% of daydreams are hallucinations
- 20% are involuntary
Antrobus 1983
- REM dreams are more bizarre and have more characters because they are longer
- they may be longer because of better recall from REM sleep
Solms 2000
- dreaming and REM sleep are controlled by different brain mechanisms
- Dreaming is controlled by the fore-brain
REM sleep is controlled by the brain-stem
dreaming having a function?
- the threat simulation theory (Ravonsuo 2000)
people who practice overcoming threats in the dream environment will have an evolutionary fitness benefit in waking life
Wamsley and Stickgold 2011
- dreams are the experience of the brain understanding the consolidation of memories
- dreams do not copy previous experiences but link them to pre-existing knowledge structures
dreaming and memory consolidation
- dreaming, particularly during REM, play a role in consolidating and integrating new information
- studies shown sleep enhances the retention of declarative and procedural memories
Wamsley 2010
and
Wamsley and stickgold 2019
- improvement in learning task performance across sleep was associated with dreaming of the learning task
- however dreaming of the task was found to be poor performance
- the dream content might thus not be part of functional brain processes during sleep
the null hypotheses
- there is no purpose or function to our dreams - even when they are meaningful
- they allow that dreams have some meaning in that they refer to individual waking experiences - therefore do differ between people
Owen Flanagan 2000 book ‘dreaming souls’
in support of the null hypotheses
- he describes dreams as decorative ‘sprandels’
- the term is used in evolutionary theory to describe a function-less feature of an organism
- if dreams are function- less, evolution might not of acted to stop them. but would have made them more difficult to remember
research designs that could demonstrate dreaming does or does not have a function
- researchers could collect dream reports or laboratory-based sleep studies
- dream content analysis - to identify patterns with cognitive or emotional variable
- longitudinal studies - track changes in dreams
- neuroimaging techniques - fMRI and EEG
- used to examine brain activity during dreams
from a phenomenological perspective
- dreams are subjective experiences that hold personal meaning and significance for individuals
- dreams often reflect inner thoughts and emotions
- underscores the importance of considering individual perspectives and interpretations of dreams
researcher propose that dreaming may serve functions related to memory consolidation, emotional processing and cognitive integration
- research suggest that dreaming may contribute to the encoding, consolidation and integration of memories and emotional experiences
- theoretical frameworks such as the activation-synthesis theory and the neurocognitive model of dreaming suggest that dreams may serve adaptive functions in cognitive and emotional processing.
neuro-imaging studies and dreaming
- shown that dreaming is associated with specific patterns of brain activity.
- increased activity in regions such as PFC
- findings suggest that dreaming may involve the activation of multiple brain networks