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Constructive Imagination
{{Unreferenced, date=June 2019 "Constructive" or "productive" imagination denotes the process resulting in formation of novel mental images, as opposed to simple recall that refers to remembering of a previously seen picture. On a neurological level, simple recall involves activation of an existing object-encoding neuronal ensemble (objectNE) in the posterior cortical hot zone; synchronous resonant activity of the objectNE results in conscious perception of the object. Constructive imagination, on the other hand, involves various mechanisms that modify an objectNE or assemble different objectNEs into novel combinations. Constructive imagination is further divided into active imagination driven by the prefrontal cortex (PFC) and spontaneous PFC-independent imagination such as REM-sleep dreaming, daydreaming, hallucinations, and spontaneous insight Insight is the understanding of a specific cause and effect within a particular context. The term insight can have several related m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reproductive Imagination
Reproductive imagination (also known as simple memory recall) is an activity in which previously seen objects or images are recalled from memory and reproduced in front of the mind's eye. Reproductive imagination is contrasted to productive or constructive imagination. Neuroscience On a neurological level, simple recall involves activation of an existing object-encoding neuronal ensemble A neuronal ensemble is a population of nervous system cells (or cultured neurons) involved in a particular neural computation. Background The concept of neuronal ensemble dates back to the work of Charles Sherrington who described the funct ... in the posterior cortical hot zone. According to binding-by-synchrony hypothesis synchronous resonant activity of the neuronal ensemble results in conscious perception of the object. {{cite journal , last1=Singer , first1=Wolf , title=Binding by synchrony , url=http://www.scholarpedia.org/article/Binding_by_synchrony , journal=Scholarpedia , page ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Object-encoding Neuronal Ensemble
A neuronal ensemble is a population of nervous system cells (or cultured neurons) involved in a particular neural computation. Background The concept of neuronal ensemble dates back to the work of Charles Sherrington who described the functioning of the CNS as the system of reflex arcs, each composed of interconnected excitatory and inhibitory neurons. In Sherrington's scheme, α-motoneurons are the final common path of a number of neural circuits of different complexity: motoneurons integrate a large number of inputs and send their final output to muscles. Donald Hebb theoretically developed the concept of neuronal ensemble in his famous book "The Organization of Behavior" (1949). He defined "cell assembly" as "a diffuse structure comprising cells in the cortex and diencephalon, capable of acting briefly as a closed system, delivering facilitation to other such systems". Hebb suggested that, depending on functional requirements, individual brain cells could participate i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posterior Cortical Hot Zone
The term posterior cortical hot zone was coined by Christof Koch and colleagues to describe the part of the neocortex closely associated with the minimal neural substrate essential for conscious perception. The posterior cortical hot zone includes sensory cortical areas in the parietal, temporal, and occipital lobes. It is the “sensory” cortex, much as the frontal cortex is the “action” cortex. When parts of the posterior cortex are damaged, whole modalities of sensory experience disappear from both waking and dreaming. For example, individuals with a lesion in the Visual area V4 often do not perceive color and dream in black-and-white; those with a lesion in the Visual area V5/MT do not perceive motion and do not dream of motion; subjects with a lesion to fusiform gyrus are impaired in face perception and also do not dream of faces. Compare that to lesions of the cerebellum or frontal cortex that have little effect on sensory experience. Object encoding in the posteri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prefrontal Cortex
In mammalian brain anatomy, the prefrontal cortex (PFC) covers the front part of the frontal lobe of the cerebral cortex. The PFC contains the Brodmann areas BA8, BA9, BA10, BA11, BA12, BA13, BA14, BA24, BA25, BA32, BA44, BA45, BA46, and BA47. The basic activity of this brain region is considered to be orchestration of thoughts and actions in accordance with internal goals. Many authors have indicated an integral link between a person's will to live, personality, and the functions of the prefrontal cortex. This brain region has been implicated in executive functions, such as planning, decision making, short-term memory, personality expression, moderating social behavior and controlling certain aspects of speech and language. Executive function relates to abilities to differentiate among conflicting thoughts, determine good and bad, better and best, same and different, future consequences of current activities, working toward a defined goal, prediction of outcomes, e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dream
A dream is a succession of images, ideas, emotions, and sensations that usually occur involuntarily in the mind during certain stages of sleep. Humans spend about two hours dreaming per night, and each dream lasts around 5 to 20 minutes, although the dreamer may perceive the dream as being much longer than this. The content and function of dreams have been topics of scientific, philosophical and religious interest throughout recorded history. Dream interpretation, practiced by the Babylonians in the third millennium BCE and even earlier by the ancient Sumerians, figures prominently in religious texts in several traditions, and has played a lead role in psychotherapy. The scientific study of dreams is called oneirology. Most modern dream study focuses on the neurophysiology of dreams and on proposing and testing hypotheses regarding dream function. It is not known where in the brain dreams originate, if there is a single origin for dreams or if multiple regions of the brain are i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daydreaming
Daydreaming is the stream of consciousness that detaches from current, external tasks when attention drifts to a more personal and internal direction. This phenomenon is common in people's daily life shown by a large-scale study in which participants spend 47% of their waking time on average on daydreaming. There are various names of this phenomenon including mind wandering, fantasy, spontaneous thoughts, etc. Daydreaming is the term used by Jerome L. Singer whose research laid the foundation for nearly all the subsequent research today. The terminologies assigned by researchers today puts challenges on identifying the common features of daydreaming, and on building collective work among researchers. There are many types of daydreams, and there is no consistent definition among psychologists. However, the characteristic that is common to all forms of daydreaming meets the criteria for mild dissociation.Klinger, Eric (October 1987). ''Psychology Today''. Also, the impacts of diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hallucinations
A hallucination is a perception in the absence of an external stimulus that has the qualities of a real perception. Hallucinations are vivid, substantial, and are perceived to be located in external objective space. Hallucination is a combination of 2 conscious states of brain wakefulness and REM sleep. They are distinguishable from several related phenomena, such as dreaming ( REM sleep), which does not involve wakefulness; pseudohallucination, which does not mimic real perception, and is accurately perceived as unreal; illusion, which involves distorted or misinterpreted real perception; and mental imagery, which does not mimic real perception, and is under voluntary control. Hallucinations also differ from "delusional perceptions", in which a correctly sensed and interpreted stimulus (i.e., a real perception) is given some additional significance. Many hallucinations happen also during sleep paralyses. Hallucinations can occur in any sensory modality—visual, auditory, olfa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insight
Insight is the understanding of a specific cause and effect within a particular context. The term insight can have several related meanings: *a piece of information *the act or result of understanding the inner nature of things or of seeing intuitively (called noesis in Greek) *an introspection *the power of acute observation and deduction, discernment, and perception, called intellection or noesis *An understanding of cause and effect based on the identification of relationships and behaviors within a model, context, or scenario (see artificial intelligence) An insight that manifests itself suddenly, such as understanding how to solve a difficult problem, is sometimes called by the German word '' Aha-Erlebnis''. The term was coined by the German psychologist and theoretical linguist Karl Bühler. It is also known as an epiphany, eureka moment or (for cross word solvers) the penny dropping moment (PDM). Sudden sickening realisations often identify a problem rather than solving i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
