Jonni Hirvonen

Jonni Hirvonen
University of Helsinki | HY · Neuroscience Center

MD PhD

About

6
Publications
1,581
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497
Citations

Publications

Publications (6)
Article
Full-text available
Inter-areal synchronization of neuronal oscillations at frequencies below~100 Hz is a pervasive feature of neuronal activity and is thought to regulate communication in neuronal circuits. In contrast, faster activities and oscillations have been considered to be largely local-circuit-level phenomena without large-scale synchronization between brain...
Article
Full-text available
Sensory-guided actions entail the processing of sensory information, generation of perceptual decisions and of appropriate actions. Neuronal activity underlying these processes is distributed into sensory, frontoparietal and motor brain areas, respectively. How the neuronal processing is coordinated across these brain areas to support functions fro...
Article
Full-text available
Current theories of schizophrenia (ScZ) posit that the symptoms and cognitive dysfunctions arise from a dysconnection syndrome. However, studies that have examined this hypothesis with physiological data at realistic time scales are so far scarce. The current study employed a state-of-the-art approach using Magnetoencephalography (MEG) to test alte...
Article
Neural dynamics leading to conscious sensory perception have remained enigmatic in despite of large interest. Human functional magnetic resonance imaging (fMRI) studies have revealed that a co-activation of sensory and frontoparietal areas is crucial for conscious sensory perception in the several second time-scale of BOLD signal fluctuations. Elec...
Article
Full-text available
Scale-free fluctuations are ubiquitous in behavioral performance and neuronal activity. In time scales from seconds to hundreds of seconds, psychophysical dynamics and the amplitude fluctuations of neuronal oscillations are governed by power-law-form long-range temporal correlations (LRTCs). In millisecond time scales, neuronal activity comprises c...

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