Umesh Vivekananda

The paper investigates theta-gamma phase-amplitude coupling in human hippocampal LFP during navigation, finding it correlates with proximity to remembered goals.

This paper develops a wireless battery-free implantable device for selective vagus nerve stimulation, demonstrating reduced off-target effects in pigs and a human trial.

Most fast-ripples (250-500 Hz) in rat and human recordings are consistent with chance clustering of action potentials; in awake patients, distinct events make up an estimated 37.5% of detections.

This study validates MEG's ability to measure neural activity across frequency and depth using intracranial EEG data from epileptic patients, showing strong agreement for lower frequencies and superficial sources, and sensitivity to deep structures like the hippocampus.

The paper uses intracranial recordings from patients with chronic cluster headache to show that the human VTA encodes reward-related signals during learning.

The paper presents a high-resolution isotropic human brain dataset and demonstrates its use for neuroanatomy analysis and visualization.

This study finds impaired associative memory and inference in postictal psychosis, linked to disrupted theta band activity, suggesting shared neural mechanisms with schizophrenia.

The paper shows that increased theta power and theta-gamma coupling during spatial memory retrieval in humans correlates with better task performance.