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Helena Melero

2 papers in the library · 87 citations · publishing 2020-2026

Papers

Real-time fMRI neurofeedback reduces auditory hallucinations and modulates resting state connectivity of involved brain regions: Part 2: Default mode network -preliminary evidence

Psychiatry Research January 14, 2020 Clemens C C Bauer, Kana Okano, Satrajit Ghosh et al. 87 citations

Auditory hallucinations in schizophrenia are linked to overactivity and hyperconnectivity in the default mode network and reduced anticorrelation with the central executive network. Patients were trained with real-time fMRI neurofeedback and meditation strategies to modulate these networks. The intervention reduced default mode network hyperconnectivity and increased anticorrelation between the default mode and central executive networks. Changes in individual default mode network connectivity correlated with reductions in auditory hallucination frequency and severity. This provides the first empirical evidence that meditation-enhanced neurofeedback can directly alter resting state network activity and reduce auditory hallucinations.

The Default Mode Network and Behavior: a Model to Analyse Psycho-Physiological Interactions in Resting State fMRI.

Brain Topography June 17, 2026 Emilio Sanz-Morales, Helena Melero

The Default Mode Network (DMN) was discovered through data-driven analysis of resting-state fMRI, making it difficult to link the network to specific cognitive functions or personality traits, because no observable task is performed during scanning. Over two decades of research have not produced a consensus methodology for studying these relationships. The authors propose an alternative method that reduces the dimensionality of extensive psychological evaluations and the spatial features of intrinsic connectivity components. Their results show that connectivity networks are only low to moderately related to behavioral and personality traits, and that this relationship is not direct. The approach may help reveal how intrinsic brain network organization relates to individual differences in cognition and personality.