Organization of thalamic and cortical alpha rhythms: Spectra and coherences

Silva, F.H Lopes da; Lierop, T.H.M.T van; Schrijer, C. F. M.; Leeuwen, W. Storm van

doi:10.1016/0013-4694(73)90216-2

Cited by 307 publications

(180 citation statements)

References 13 publications

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“…At the same time, we propose that the occipital alpha driven by OCC ABS reflects the "induced alpha rhythm" (Ben-Simon et al 2008) or the "low-amplitude alpha" activity (Scheeringa et al 2012). This type of alpha rhythm has a clear source in the occipital area and probably reflects oscillations identified in many other studies as the alpha rhythm associated with the thalamo-occipital circuit (Contreras and Steriade 1997, DiFrancesco et al 2008, Feige et al 2005, Goldman et al 2002, Lopes da Silva et al 1973, Lopes Da Silva and Storm Van Leeuwen 1977, Moosmann et al 2003, Moruzzi and Magoun, 1949, de Munck et al 2007, Sadaghiani et al 2010, Steriade et al 1993. One potential reason why the regions found here as related to the DMN alpha (the parieto-medial and frontal cluster) have not been observed in previous works, is that the DMN alpha is of much smaller power than the occipital alpha rhythm (Fig.…”

Section: Two Components Of the Resting State Alpha Rhythm: Dmn Alpha supporting

confidence: 65%

“…Basic knowledge derived from intracranial animal studies (Contreras and Steriade 1997, Lopes da Silva et al 1973, Lopes Da Silva and Storm Van Leeuwen, 1977, Moruzzi and Magoun, 1949Steriade et al 1993) established the hypothesis that the alpha rhythm is elicited in the visual (occipital) cortex and the visual thalamus during resting state. This phenomenon could mirror the relationship between alpha rhythm generated in the thalamo-occipital circuity and hemodynamic activity, as a reflection of parallel metabolic changes in human studies.…”

Section: Alpha Rhythm and The Thalamo-occipital Circuitmentioning

confidence: 99%

“…The classical hypothesis assumes a thalamo-occipital origin of the alpha rhythm (Goldman et al 2002, Laufs et al 2006, Lopes da Silva et al 1973). Here we operationally term this type of alpha activity "occipital alpha".…”

Section: Introductionmentioning

confidence: 99%

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The relationship between alpha burst activity and the default mode network

Rusiniak¹,

Wróbel²,

Cieśla³

et al. 2018

Acta Neurobiologiae Experimentalis

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Alpha rhythm, described by Hans Berger, is mainly recorded from the occipital cortex (OCC) of relaxed subjects with their eyes closed.Early studies indicated the thalamo-cortical circuit as the origin of alpha rhythm. Recent works suggest an additional relationship between alpha rhythm and the Default Mode Network (DMN). We simultaneously recorded electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) signals in 36 young males asked to alternately close and open their eyes in 30-s blocks.Using an EEG source channel montage (the recorded signal was interpolated to designated source positions corresponding to certain brain regions) we found an alpha rhythm sub-activity composed of its intrinsic events, called alpha bursting segments (ABS). More ABS were observed on source channels related to the DMN than those located over the OCC. Similarly, both the beamformer source analysis and fMRI indicated that the specific ABS activity detected on the posterior cingulate cortex/precuneus (PCC) source channel was less related to the OCC than to the DMN source channels. The fMRI analysis performed using the PCC-ABS as a general linear model regressor indicated an increased blood oxygenation level-dependent signal change in DMN nodes -precuneus and prefrontal cortex. These results confirm the OCC source of alpha activity and additional specific sources of ABS in the DMN.

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Section: Two Components Of the Resting State Alpha Rhythm: Dmn Alpha supporting

confidence: 65%

Section: Alpha Rhythm and The Thalamo-occipital Circuitmentioning

confidence: 99%

See 1 more Smart Citation

The relationship between alpha burst activity and the default mode network

Rusiniak¹,

Wróbel²,

Cieśla³

et al. 2018

Acta Neurobiologiae Experimentalis

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show abstract

“…Previous studies (Storm van Leeuwen et al 1967;Lopes da Silva et al 1973) have revealed that intracortical coherences are in general larger than any thalamo-cortical coherence measured in the same dog. This entails the following question: are these large intracortical coherences exclusively due to an intracortical process independent of thalamic sources, or not?…”

mentioning

confidence: 81%

“…In order to understand the neurophysiology of alpha rhythms one has, however, to resort to studies in other species which may offer an experimental model of the human alpha rhythm, for example cat (Lanoir and Cordeau 1970;Lanoir 1972;Rougeul et al 1974) and dog (Storm van Leeuwen et al 1967;Lopes da Silva et al 1973).…”

mentioning

confidence: 99%