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Neuroimaging methods group (NIMEG)

We work at the intersection of neuroscience and neurotechnology by developing novel measurement and analysis methods for studying human brain structure and function, as well as applying these methods to address important and challenging research questions in both basic and clinical neuroscience. We extensively employ neuromagnetic measurements of brain activity, which give a temporally detailed picture of activation dynamics.

Our aims are

  • to substantially improve the spatial resolution of neuromagnetic measurements by new instrumentation as well as by physiologically-informed computational modeling
  • to develop novel analytical approaches for neuroimaging data, also for real-time use to support closed-loop experiments where the subject's brain activity affects subsequent stimulation; in particular, we focus on assessing functional connectivity between brain regions and between the brains of interacting subjects
  • to investigate the neural processes supporting cognitive functions such as attentional selection, conscious perception, mental imagery and metacognition

 

Figures

Left: OPM and SQUID sensor layouts. Right: OPM-MEG measurement session.

Left: Comparison of conventional MEG (upper row) and OPM-based MEG (lower row) used in the high-resolution MEG project. Right: OPM-MEG measurement session.

Example of functional connectivity at different frequency bands.

Joint estimation of directed functional connectivity (left) and source locations (right) from MEG data acquired while viewing pictures of human faces.

Schematic description of selective attention-based BCI.

Left: MEG/EEG based BCI system employing selective attention task with possible neurofeedback; Right: Robust selective attention target detection for establishing communication. The project goal is to restore lost communication ability for completely locked-in patients.

Projects

Members

Mikael Grön

Mikael Grön

Research Assistant
Karoliina Hakkarainen

Karoliina Hakkarainen

Research Assistant

Hanna-Leena Halme

Department of Neuroscience and Biomedical Engineering
Linda Henriksson

Linda Henriksson

Department of Neuroscience and Biomedical Engineering
University Lecturer

Joonas Iivanainen

Department of Neuroscience and Biomedical Engineering
Doctoral Candidate
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Miiamaaria Kujala

Visiting Postdoctoral Researcher

Dovile Kurmanaviciute

Department of Neuroscience and Biomedical Engineering
Doctoral Candidate
Narayan Puthanmadam Subramaniyam

Narayan Puthanmadam Subramaniyam

Department of Neuroscience and Biomedical Engineering
Postdoctoral Researcher

Sara Sommariva

Department of Neuroscience and Biomedical Engineering
Postdoctoral Researcher

Gavriela Vranou

Research Assistant
Rasmus Zetter

Rasmus Zetter

Department of Neuroscience and Biomedical Engineering
Doctoral Candidate

Ivan Zubarev

Department of Neuroscience and Biomedical Engineering
Doctoral Candidate

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