The default mode network may mediate perception of internally generated sound.
Evidence
Schizophrenia is regarded as a large cluster of profound neuropsychiatric symptoms. A subtype of patients (also) experience phantom perception of sounds. One interpretation is that, since the DMN is different between groups in previous work and ours, the DMN somehow plays a role in ‘hearing’ internally generated sound (whether it is meaningful like in patients with schizophrenia or meaningless like tinnitus). — Dijk, Pim van, Physiology, Psychoacoustics and…, 2747
This DMN has been previously implicated in other diseases such as Alzheimer’s disease. Lower functional connectivity scores in the DMN were found in an Alzheimer’s disease group when compared to normal groups (Binnewijzend et al. 2012 ). In contrast, results of resting-state data-analysis in schizophrenia have been variable (Greicius 2008 ). Schizophrenia is regarded as a large cluster of profound neuropsychiatric symptoms. A subtype of patients (also) experience phantom perception of sounds. One interpretation is that, since the DMN is different between groups in previous work and ours, the DMN somehow plays a role in ‘hearing’ internally generated sound (whether it is meaningful like in patients with schizophrenia or meaningless like tinnitus). — Dijk, Pim van, Physiology, Psychoacoustics and…, 2755
Categorization
- XREF: Unites meaningful auditory hallucinations in schizophrenia with meaningless tinnitus through a shared DMN mechanism — a broad claim spanning clinical neuroscience. — connects to: The default mode network strengthens when the mind wanders and underlies self-understanding.; The auditory cortex can fabricate sounds indistinguishable from real perception — Eric J. Heller, Why You Hear What You Hear- An…, 2288
- QUESTION: Worth chasing: is DMN alteration a shared mechanism across phantom-sound conditions, or just correlational noise given variable schizophrenia findings?
- corroborated: 5 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 2747; Dijk, Pim van, Physiology, Psychoacoustics and…, 2755
Broader Connections
- The auditory cortex can fabricate sounds indistinguishable from real perception
#expands(0.82) — Eric J. Heller, Why You Hear What You Hear- An…, 2288