Christina F Lavallee

• PhD
• Consultant at Brain Products GmbH

The ability to inhibit behavior is crucial for adaptation in a fast changing environment and is commonly studied with the stop signal task. Current EEG research mainly focuses on the N200 and P300 ERPs and corresponding activity in the theta and delta frequency range, thereby leaving us with a limited understanding of the mechanisms of response inh...

Background: The use of concurrent EEG-fMRI recordings has increased in recent years, allowing new avenues of medical and cognitive neuroscience research; however, currently used setups present problems with data quality and reproducibility. New method: We propose a compact experimental setup for concurrent EEG-fMRI at 4T and compare it to a more...

The ability to inhibit unwanted thoughts or actions is crucial for successful functioning in daily life; however, this ability is often impaired in a number of psychiatric disorders. Despite the relevance of inhibition in everyday situations, current models of inhibition are rather simplistic and provide little generalizability especially in the fa...

Background / Purpose: We aimed to investigate the dissociation of time-frequency parameters under reactive and proactive control conditions during global and selective stopping. We further applied a novel approach to group-level ICA of time-frequency data. Main conclusion: Multi-level group ICA provides a novel approach to the analysis of time...

Humans are rarely faced with one simple task, but are typically confronted with complex stimulus constellations and varying stimulus-relevance in a given situation. Through modifying the prototypical stop-signal task and by combined recording and analysis of electroencephalography (EEG) and functional magnetic resonance imaging (fMRI), we studied t...

The concept of the ∑n (the sum of n) = n can be considered a description of the holographic condition. We present systematic calculations of the quantitative convergence between the electromagnetic and related physical properties of the plasma cell membrane and its ion channels with those of the entire cerebral volume. The thickness and fundamental...

Response inhibition paradigms, as for example stop signal and go/no-go tasks, are often used to study cognitive control processes. Because of the apparent demand to stop a motor reaction, the electrophysiological responses evoked by stop and no-go trials have sometimes likewise been interpreted as indicators of inhibitory processes. Recent research...

The study objective was to determine the quantitative electroencephalographic correlates of meditation, as well as the effects of hindering (15 Hz) and facilitative (7 Hz) binaural beats on the meditative process. The study was a mixed design, with experience of the subject as the primary between-subject measure and power of the six classic frequen...

Previous researchers have studied meditation practices as a means to understand consciousness as well as altered states of consciousness. Various meditation techniques, such as Transcendental Meditation (TM) and Qigong, have been explored with source localization tools; however, the concentrative meditation technique has yet to be fully studied in...

Principles of Neurotheology is the scholastic integration by the perspicacious Andrew Newberg of two seemingly disparate fields, neuroscience and theology. Principles of Neurotheology is not just merely a discussion of God and brain. The multidisciplinary nature of neurotheology requires an integrative framework to discern the mind/brain connection...

Previous studies exploring mental time travel paradigms with functional neuroimaging techniques have uncovered both common and distinct neural correlates of re-experiencing past events or pre-experiencing future events. A gap in the mental time travel literature exists, as paradigms have not explored the affective component of re-experiencing past...

Entanglement has been described as excess correlation between separated parts of a quantum system that may exceed the boundaries of light velocity across space and time. The concept of macroscopic entanglement is considered an emergent condition of microscopic or quantum entanglement such that functional relationships between electron spin, orbital...

In three different experiments pairs of unrelated people sitting in two different rooms were exposed simultaneously to different rates of circumcerebral rotations of weak, complex magnetic fields in order to produce "dynamic similarity". Quantitative electroencephalographic (QEEG) measurements were taken for one member of each pair in one room whil...