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The Polyvagal Theory was proposed in 1994 by Stephen Porges during his tenure as director of the Brain-Body Center at the University of Illinois at Chicago. [16] The theory explores the structure and function of the vagus nerve , emphasizing its two efferent branches originating in the medulla oblongata .
The polyvagal theory highlights three main ordinal processes, inactive response to an environmental threat, the active response to an environmental threat, and the fluctuation between the connect and disconnect to an environmental threat. [17] This theory, like others, [33] decomposes heart rate variability based on frequency domain ...
The polyvagal theory by Porges is an influential model of how the vagal pathways respond to novelty and to stressful external stimuli. [30] [31] [32] The theory proposes that there are two vagal systems, one that is shared with reptiles and amphibia and a second, more recent, system that is unique to mammals. The two pathways behave differently ...
Play therapy, the polyvagal theory, and DMM theory were combined in Hadiprodjo's doctoral thesis. [106] Combining the DMM with the Assessment of Parent-Child Interactions (ACPI, a music theory-based assessment), can allow the application of music theory to understand family attunement and nonverbal communication in the context of self-relevant ...
Stephen Porges' polyvagal theory claims that the vagus nerve system is central to connecting these clusters. [14] Siegel's model of the brain attempts to simplify the complexity of brain formation in emphasizing interaction between the brainstem, limbic systems (hippocampus and amygdala) and middle prefrontal cortex.
Many of the Polyvagal theory tenets incorporated in the Somatic Experiencing training are controversial and unproven. The SE therapy concepts such as "dorsal vagal shutdown" with bradycardia that are used to describe "freeze" and collapse states of trauma patients are controversial since it appears the ventral vagal branch, not the dorsal vagal ...
Upon leaving the medulla oblongata between the olive and the inferior cerebellar peduncle, the vagus nerve extends through the jugular foramen, then passes into the carotid sheath between the internal carotid artery and the internal jugular vein down to the neck, chest, and abdomen, where it contributes to the innervation of the viscera, reaching all the way to the colon.
According to the Polyvagal theory developed by Dr. Stephen Porges, the "Social Nervous System" is an affiliative neurocircuitry that prompts affiliation, particularly in response to stress. [2] This system is described as regulating social approach behavior. A biological basis for this regulation appears to be oxytocin. [3]