Significance of the insula for the evolution of human awareness of feelings from the body.
Level 5 - mechanism / opinion, no new human data
Narrative review and theoretical synthesis without systematic methodology or new human data.
PubMed 21534994 · doi:10.1111/j.1749-6632.2011.05990.x
What was done
This paper is a narrative review synthesizing neuroanatomical and functional evidence to propose an evolutionary and functional model of how interoceptive signals from the body are integrated across the human insula to produce subjective awareness.
What was found
The abstract reports no numerical data. It describes an ascending pathway terminating in the posterior insula, progressing to mid- and anterior-insula integration, and notes that anterior insular activity correlates with subjective bodily and emotional feelings, potentially supporting a model of human conscious awareness.
Why it matters
It outlines a widely cited neuroanatomical framework proposing that human subjective feeling and awareness arise from hierarchical interoceptive integration along the posterior-to-anterior axis of the insula.
Limits
The abstract describes a conceptual review presenting the author's theoretical viewpoint without systematic search criteria, meta-analytic methods, or new empirical measurements.
Cited by
- supports Bud Craig and Antonio Damasio proposed theoretical frameworks identifying the insula as a primary neural substrate for the conscious experience of feelings, emotions, and pain.