SCIENTIFIC ASPECT : Sudden Jerks During Dreams
- jujube0764
- Sep 24, 2024
- 2 min read
Updated: Nov 27, 2024
Neurocognitive accounts of dreaming agree that memory shapes the content of dream experience in a top-down manner. Dreams are affected by everything from basic perceptual and semantic knowledge, to emotional and autobiographical memory, and socio-cultural and evolutionary biases.
The most common example of dreaming being influenced by muscular twitches occurs during sleep onset when the experience of hypnic jerks can be associated with vivid imagery of falling of a building or a bridge. Similarly, crashing into a car in an accident.
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Beyond muscular twitches, other internal body states may also play a role in dreaming cognition. For instance, changes in breathing, heart rate, metabolism or circadian rhythm.
Recent scientific evidence that physiological signals influence dream content is shown in (Perogamvros et al. (2019)), who found increased heartbeat-evoked potentials during REM sleep in nightmare sufferers. The heartbeat-evoked potential represents cortical response to the heartbeat and is an index of interoception, i.e. the sense of internal body states.
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In one scene in Inception where a "jerk" in sleep occurs is during the heist sequence in the dream within a dream. As the characters navigate through different dream levels, there are instances where the stability of the dream world is compromised, leading to sudden shifts in gravity, time, and the environment. These disruptions can be seen as the subconscious mind reacts to the awakening of the dreamer.
Additionally, the concept of the "kick" in the movie serves as a mechanism to jolt the dreamers awake from deeper dream states back to reality. The kicks are designed to create a physical sensation that triggers the dreamer to wake up, often accompanied by a sudden jerk or movement in the dream world that corresponds to the waking action in reality.
In a nutshell, it can be analysed that science believes that sudden jerks during sleep occur as a way to prevent paralysis during the transition from wakefulness to sleep. This phenomenon, known as hypnic jerks , is a normal part of the sleep process and is generally harmless. While the exact cause is not fully understood, these jerks are considered a natural occurrence that helps the body avoid prolonged periods of immobility during sleep.
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