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Javeria A. Hashmi

2 papers in the library · 89 citations · publishing 2018-2020

Papers

Common and Dissociable Neural Activity After Mindfulness-Based Stress Reduction and Relaxation Response Programs

Psychosomatic Medicine April 11, 2018 Gunes Sevinc, Britta K. Hölzel, Javeria A. Hashmi et al. 65 citations

Two meditation-based stress reduction programs—Relaxation Response (RR) and Mindfulness-Based Stress Reduction (MBSR)—both reduced stress, with MBSR showing a larger effect (Cohen's d = 1.02) than RR (Cohen's d = 0.50). Both programs activated shared neural pathways between ventromedial prefrontal regions and supplementary motor areas. However, the RR bodyscan meditation, which emphasizes physical relaxation, showed stronger connectivity between the right inferior frontal gyrus (involved in inhibition and control) and supplementary motor areas. The MBSR program, which emphasizes mindful awareness without explicit relaxation, uniquely improved self-compassion and rumination and showed connectivity between the right anterior insula (sensory awareness and salience) and pregenual anterior cingulate during meditation. These distinct neural patterns align with each program's theoretical focus.

DOI: 10.1097/psy.0000000000000590 (opens in new tab) Meditation Mindfulness-based stress reduction Rumination Insula +8

Hippocampal circuits underlie improvements in self‐reported anxiety following mindfulness training

Brain and Behavior September 18, 2020 Gunes Sevinc, Jonathan Greenberg, Britta K. Hölzel et al. 24 citations

Mindfulness meditation training is linked to structural changes in the hippocampus, specifically the subiculum, which are associated with reduced connectivity between the hippocampus and lateral occipital regions during the retrieval of extinguished fear memories. This reduced connectivity correlates with decreases in self-reported anxiety after mindfulness training. The findings suggest that the subiculum plays a key role in regulating interactions with contextual cues during memory retrieval, and that mindfulness training may foster resilience by altering these brain circuits.

DOI: 10.1002/brb3.1766 (opens in new tab) Full text (opens in new tab) Brain plasticity Extinction retrieval Fear memory FMRI +5