The Neurobiology of Imagination: Possible Role of Interaction-Dominant Dynamics and Default Mode Network

the imagination is a neurological reality, that it is lodged in specific parts of the brain, that it consists of an identifiable set of components and processes, that these components and processes have adaptive functions, and that in fulfilling its functions imagination has been a major causal factor in making Homo sapiens the dominant species on ... See more

In recent years, neuroimaging has provided evidence to suggest that imagining the future relies on much of the same neural machinery as remembering the past. One hypothesis that such findings motivate is that memories must be reactivated in order to extract the information needed to “flesh out” detailed simulations. Indeed, if simulations involve t... See more

The precuneus is involved in mental imagery concerning the self, episodic memory, and modeling other people’s views—all of which are main components of the DMN. Benedek and Jauk, psychologists specializing in research on creativity, note that “higher creativity is consistently associated with higher gray matter density in DMN regions, especially th... See more

the default network consists of regions that, in the absence of exteroceptive [externally oriented] attention or narrowly focused mental effort, support self-directed concerns, immersion in one’s inner life (e.g., daydreaming) or imagining the inner life of others (Theory of Mind)

two possibilities. One calls for actual neural projections from the “affect complex” to the “posterior sensory set” and vice versa. The other possibility calls for approximate simultaneity of activations in the two sets, resulting in the production of a time-based ensemble. In either option, the ultimate realization of a conscious mind depends on b

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a particularly vivid form of future thinking: the imaginative construction or simulation of scenarios that might occur in one’s future. We hypothesized that the flexible use of episodic details from memory during imaginative simulations of the future can help to understand constructive aspects of memory, such as its susceptibility to distortion (se... See more

According to the constructive episodic simulation hypothesis, extracted episodic details must also be recombined into a coherent event simulation. This recombinatory ability is thought to be central to flexibly imagining the future – to construct as well as disassemble and rework the components of scenarios to create different outcomes to enhance f... See more