Arun Sasidharan
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View article: A hidden culprit: Unusual thyroid involvement in melioidosis—A case report
A hidden culprit: Unusual thyroid involvement in melioidosis—A case report Open
Melioidosis, caused by Burkholderia pseudomallei , is a serious infection with a wide range of clinical presentations; however, thyroid gland involvement is exceptionally rare.We present the case of a 56-year-old woman with poorly controll…
View article: EEG Phase Slips Reveal Detailed Brain Activity Patterns of Novice Vipassana Meditators During Decision Making Tasks
EEG Phase Slips Reveal Detailed Brain Activity Patterns of Novice Vipassana Meditators During Decision Making Tasks Open
Our study adopted a novel approach, utilizing four biomarkers, namely EEG potentials, their first-order derivatives, and phase slip rates derived from each, to discern the differences between novice Vipassana (NVP) subjects and non-meditat…
View article: Evaluating the Orbit Wearable Headband for Ecologically Valid Mental State Assessment: EEG/PPG Signal Quality and Efficacy in Multimodal Data Analysis
Evaluating the Orbit Wearable Headband for Ecologically Valid Mental State Assessment: EEG/PPG Signal Quality and Efficacy in Multimodal Data Analysis Open
Consumer wearables for mental state assessment face scepticism regarding data quality. This study evaluated whether a consumer-grade EEG/PPG headband (Orbit) can reliably capture mental states in real-world settings. We compared Orbit's EE…
View article: Similar States, Different Paths: Neurodynamics of diverse meditation techniques
Similar States, Different Paths: Neurodynamics of diverse meditation techniques Open
Meditation encompasses diverse practices that train attention inward, in contrast to externally oriented task states. However, the neurodynamic features distinguishing meditative states from non-meditative states across traditions remain u…
View article: Is There a Direct Relation Between EEG Band Spectrum and DMN Activity in fMRI? A Multivariate Exploratory Study
Is There a Direct Relation Between EEG Band Spectrum and DMN Activity in fMRI? A Multivariate Exploratory Study Open
This study uses an EEG-fMRI dataset to examine the relation between fMRI BOLD signals from Default Mode Network (DMN) regions and the conventional EEG band spectral data. Our results indicate that the DMN activity corresponds to the EEG ba…
View article: Non-duality in brain and experience of advanced meditators – Key role for Intrinsic Neural Timescales
Non-duality in brain and experience of advanced meditators – Key role for Intrinsic Neural Timescales Open
Distinguishing between self (internal) and environment (external) is fundamental to human experience, with ordinary waking consciousness structured around this duality. However, contemplative traditions describe non-dual states where this …
View article: Time-to-onset and temporal dynamics of EEG during breath-watching meditation
Time-to-onset and temporal dynamics of EEG during breath-watching meditation Open
Introduction Mind-body practices, such as meditation, enhance mental well-being. Research studies consistently demonstrate improved brain function and psychological well-being in meditation practitioners. A substantial body of neuroscienti…
View article: Electrophysiological Correlates of Nadamay Meditation: An Eeg Study of Neural Oscillations
Electrophysiological Correlates of Nadamay Meditation: An Eeg Study of Neural Oscillations Open
View article: Meditation Proficiency Helps in Disengaging from Distraction: A P300 Study
Meditation Proficiency Helps in Disengaging from Distraction: A P300 Study Open
View article: FDCT-Enhanced CNN-LSTM for High-Accuracy Non-Invasive EEG Channel Classification in Focal Seizure
FDCT-Enhanced CNN-LSTM for High-Accuracy Non-Invasive EEG Channel Classification in Focal Seizure Open
View article: Characterization of neuronal oscillations in the prelimbic cortex, nucleus accumbens and CA1 hippocampus during object retrieval task in rats predisposed to early life stress
Characterization of neuronal oscillations in the prelimbic cortex, nucleus accumbens and CA1 hippocampus during object retrieval task in rats predisposed to early life stress Open
View article: The Balanced Mind and its Intrinsic Neural Timescales in Advanced Meditators
The Balanced Mind and its Intrinsic Neural Timescales in Advanced Meditators Open
A balanced mind, or equanimity, cultivated through meditation and other spiritual practices, is considered one of the highest mental states. Its core features include deidentification and non-duality. Despite its significance, its neural c…
View article: Development and Validation of a Culturally Adapted, Event-related Potential Paradigm for Assessing Alcohol Cue Reactivity and Error Processing in Alcohol Dependence
Development and Validation of a Culturally Adapted, Event-related Potential Paradigm for Assessing Alcohol Cue Reactivity and Error Processing in Alcohol Dependence Open
Background: Research on event-related potentials (ERP) in addiction highlights the importance of cognitive ERP markers, such as P300 and error-related negativity (ERN), in distinguishing between alcohol-dependent patients and healthy contr…
View article: Development and standardization of Indian Alcohol Photo Stimuli (IAPS) for cue-reactivity paradigms in patients with alcohol use disorder
Development and standardization of Indian Alcohol Photo Stimuli (IAPS) for cue-reactivity paradigms in patients with alcohol use disorder Open
Background: The availability of appropriate alcohol-related stimuli is a crucial concern for the evaluation and treatment of patients with alcohol dependence syndrome. The study aimed to standardize alcohol-related images with cultural rel…
View article: Electroencephalographic power spectrum and intersubject correlation on acoustic stimulation with modes of Indian music: a randomized controlled trial
Electroencephalographic power spectrum and intersubject correlation on acoustic stimulation with modes of Indian music: a randomized controlled trial Open
Background Music not just entertains an individual but causes changes in the frequency spectrum of the brain waves and cognition that are recognizable using signals obtained through electroencephalography (EEG). EEG studies on the effect o…
View article: Simple Neurofeedback via Machine Learning: Challenges in real time multivariate assessment of meditation state
Simple Neurofeedback via Machine Learning: Challenges in real time multivariate assessment of meditation state Open
Attaining proficiency in meditation is difficult, especially without feedback since the mind may be easily distracted with thoughts and only long term efforts see any impact. Self-regulation would be much more effective if provided real ti…
View article: People with dyssomnia showed increased vulnerability to CoVID-19 pandemic: a questionnaire-based study exploring the patterns and predictors of sleep quality using the latent class analysis technique in Indian population
People with dyssomnia showed increased vulnerability to CoVID-19 pandemic: a questionnaire-based study exploring the patterns and predictors of sleep quality using the latent class analysis technique in Indian population Open
View article: Simultaneous assessment of P50, MMN, ERN and P300 event-related potentials among patients with Schizophrenia – an exploratory study
Simultaneous assessment of P50, MMN, ERN and P300 event-related potentials among patients with Schizophrenia – an exploratory study Open
Purpose P50 suppression (sensory gating or inhibition), MMN (mismatch negativity; bottom-up detection of change), ERN (error related negativity; conflict monitoring) and P300 (attention allocation and memory updating for salient events) ar…
View article: Schizophrenia patients show aberrant brain dynamics associated with gestalt-perception and corollary discharge: Reflections from ERP and fMRI findings
Schizophrenia patients show aberrant brain dynamics associated with gestalt-perception and corollary discharge: Reflections from ERP and fMRI findings Open
Background Schizophrenia is a disorder of higher mental attributes, and is characterized by psychotic symptoms that are believed to involve a basic inability to make valid predictions about expected sensations and experiences. These have b…
View article: One-week exposure to South Indian Classical music clip having incremental variation in tempo and octave promotes better anxiety reduction among medical students – an EEG based study
One-week exposure to South Indian Classical music clip having incremental variation in tempo and octave promotes better anxiety reduction among medical students – an EEG based study Open
1. ABSTRACT Several scientific studies using Western classical music and some using Indian classical music have reported benefits of listening to musical pieces of specific ‘genre’ or ’Raga’, in terms of stress reduction and mental well-be…
View article: Efficacy of the combination of cognitive training and acoustic stimulation in eliciting lucid dreams during undisturbed sleep - a pilot study using polysomnography, dream reports and questionnaires
Efficacy of the combination of cognitive training and acoustic stimulation in eliciting lucid dreams during undisturbed sleep - a pilot study using polysomnography, dream reports and questionnaires Open
Lucid dreaming is a unique state between dreaming sleep and waking, wherein one is aware of being in dream and able to control dream contents. The present study was aimed as a proof-of-concept to a previously proposed idea that combining a…
View article: Assessment of Sleep Spindle Density among Genetically Positive Spinocerebellar Ataxias Types 1, 2, and 3 Patients
Assessment of Sleep Spindle Density among Genetically Positive Spinocerebellar Ataxias Types 1, 2, and 3 Patients Open
SSDs were significantly decreased in patients with SCA, which is a novel finding. This is likely due to the "thalamic switch" disruption, observed as reduced SSDs in SCA2 and SCA3. Sleep spindle deficits could act as one of the biomarkers …
View article: Enriched environment attenuates behavioral seizures and depression in chronic temporal lobe epilepsy
Enriched environment attenuates behavioral seizures and depression in chronic temporal lobe epilepsy Open
Summary Objective Temporal lobe epilepsy (TLE) is commonly associated with depression, anxiety, and cognitive impairment. Despite significant progress in our understanding of the pathophysiology of TLE, it remains the most common form of r…
View article: Effect of Deception Awareness in Deception Detection: a P300-based study for increasing efficiency of CIT
Effect of Deception Awareness in Deception Detection: a P300-based study for increasing efficiency of CIT Open
View article: AUTOMATED PORTABLE EPILEPSY – EEG SYSTEM [“EpiDome”]
AUTOMATED PORTABLE EPILEPSY – EEG SYSTEM [“EpiDome”] Open
View article: Elevated serum adenosine deaminase levels in neuroleptic-naïve patients with recent-onset schizophrenia
Elevated serum adenosine deaminase levels in neuroleptic-naïve patients with recent-onset schizophrenia Open
Schizophrenia is characterized by pathophysiological alterations of multiple neurotransmitter systems such as dopaminergic, glutamatergic, GABA-ergic and serotonergic pathways. Adenosine, a homeostatic neuromodulator that mediates signalin…
View article: Assessing Neurocognition via Gamified Experimental Logic: A Novel Approach to Simultaneous Acquisition of Multiple ERPs
Assessing Neurocognition via Gamified Experimental Logic: A Novel Approach to Simultaneous Acquisition of Multiple ERPs Open
The present study describes the development of a neurocognitive paradigm: "Assessing Neurocognition via Gamified Experimental Logic" (ANGEL), for performing the parametric evaluation of multiple neurocognitive functions simultaneously. ANG…
View article: Hepcidin as a marker of iron stores in oral submucous fibrosis
Hepcidin as a marker of iron stores in oral submucous fibrosis Open
View article: C-reactive protein and glycemic control in adults with type 2 diabetes mellitus
C-reactive protein and glycemic control in adults with type 2 diabetes mellitus Open
Objective: To find a correlation between glycemic control and C-reactive protein (CRP) in patients with type 2 diabetes mellitus (T2DM) and to assess if good control of glycosylated hemoglobin (HbA1c) decreases the CRP values. Materials an…
View article: Cytological study of thyroid lesions by fine-needle aspiration cytology
Cytological study of thyroid lesions by fine-needle aspiration cytology Open
Background: Thyroid disorders are the most common endocrine disorders worldwide. Thyroid enlargement has to be investigated to rule out a neoplasm. The main purpose of fine-needle aspiration (FNA) is to provide a rational approach for mana…