Electroencephalographic rhythms from the depths of the parietal, occipital and temporal lobes in man

Sem‐Jacobsen, Carl W.; Petersen, Magnus C.; Dodge, Henry W.; Lazarte, Jorge A.; Holman, Colin B.

doi:10.1016/0013-4694(56)90118-3

Cited by 80 publications

(19 citation statements)

References 5 publications

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“…Synchronous gamma-band activity rarely occurs in the absence of visual stimulation, can occur over a wide range of stimulus orientations, directions and speeds Freiwald et al, 1995;Gray and Viana Di Prisco, 1997;Maldonado and Gray, 1997), and exhibits specific changes in phase related to stimulus orientation and the orientation preferences of the cells (König et al, 1995b). Together, these data suggest a close correspondence in the mechanisms generating synchronous gamma-band activity in the cat and monkey (Gray and McCormick, 1996), and imply that this form of activity may be a general feature of mammalian striate cortex, including the human (Sem-Jacobsen et al, 1956;Chatrian et al, 1960;Tallon-Baudry et al, 1996, 1997a.…”

Section: Comparison Of Response Synchronization In Cat and Monkeymentioning

confidence: 67%

Dynamics of Striate Cortical Activity in the Alert Macaque: II. Fast Time Scale Synchronization

2000

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Synchronous neuronal activity with millisecond precision has been postulated to contribute to the process of visual perceptual grouping. We have performed multineuron recordings in striate cortex of two alert macaque monkeys to determine if the occurrence and properties of this form of activity are consistent with the minimal requirements of this theory. We find that neuronal synchronization with millisecond precision is a prevalent and robust feature of stimulus-evoked activity in striate cortex. It occurs among adjacent cells recorded by the same electrode (<120 µm), among cells recorded at separate but nearby sites (300-400 µm) and between cells recorded at locations separated by 3-4 mm. The magnitude and probability of synchronous firing is inversely related to the spatial separation between the cells and it occurs within and between groups of cells that are both tuned and untuned for stimulus orientation and direction. Among those tuned for orientation, cell pairs separated by <400 µm showed no clear dependence of correlated firing on orientation preference. The occurrence of gamma-band (20-70 Hz) oscillations in the cellular firing patterns was a strong predictor of synchronous firing at each of the spatial scales. Nearly 90% of the cell pairs showing significant correlation also showed oscillatory firing in one or both cells of the pair. These results are consistent with some, but not all, of the previous reports of synchronous activity in striate cortex of both cat and primates. The similarities in the properties of synchronous oscillations in the monkey and cat suggest that this form of neuronal activity is a general property of mammalian striate cortex. The relation between correlation and oscillation suggests that neuronal rhythmicity is an important mechanism contributing to synchronization.

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Section: Comparison Of Response Synchronization In Cat and Monkeymentioning

confidence: 67%

Dynamics of Striate Cortical Activity in the Alert Macaque: II. Fast Time Scale Synchronization

2000

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“…A few early iEEG studies had reported that motor tasks and sensory stimulation could modulate HFA (e.g. Sem-Jacobsen et al, 1956; Chatrian et al, 1960; Brindley and Craggs, 1972 ; Halgren et al 1977), but the field really took off with the ‘gamma buzz’: the marked interest of the neuroscience community in gamma-band synchronization and its role in neural representation and communication fueled by recent experimental and technological advances.…”

Section: Historical Background: From Berger To ‘Gbr’mentioning

confidence: 99%

High-frequency neural activity and human cognition: Past, present and possible future of intracranial EEG research

Lachaux

Axmacher

Mormann

et al. 2012

Progress in Neurobiology

432

406

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Human intracranial EEG (iEEG) recordings are primarily performed in epileptic patients for presurgical mapping. When patients perform cognitive tasks, iEEG signals reveal high-frequency neural activities (HFA, between around 40 Hz and 150 Hz) with exquisite anatomical, functional and temporal specificity. Such HFA were originally interpreted in the context of perceptual or motor binding, in line with animal studies on gamma-band (‘40Hz’) neural synchronization. Today, our understanding of HFA has evolved into a more general index of cortical processing: task-induced HFA reveals, with excellent spatial and time resolution, the participation of local neural ensembles in the task-at-hand, and perhaps the neural communication mechanisms allowing them to do so. This review promotes the claim that studying HFA with iEEG provides insights into the neural bases of cognition that cannot be derived as easily from other approaches, such as fMRI. We provide a series of examples supporting that claim, drawn from studies on memory, language and default-mode networks, and successful attempts of real-time functional mapping. These examples are followed by several guidelines for HFA research, intended for new groups interested by this approach. Overall, iEEG research on HFA should play an increasing role in cognitive neuroscience in humans, because it can be explicitly linked to basic research in animals. We conclude by discussing the future evolution of this field, which might expand that role even further, for instance through the use of multi-scale electrodes and the fusion of iEEG with MEG and fMRI.

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“…The inspection of the human EEGrMEG literature since the 1950s reveals numerous reports of gamma oscillatory activities in various sensory Ž modalities and tasks Galambos et al, 1981;Pantev et al, 1991;Pfurtscheller et al, 1994, among many others: Sem-Jacobsen et al, 1956;Sheer, 1989; for review see . At first glance, these observations may appear rather disparate.…”

Section: Introductionmentioning

confidence: 99%

Oscillatory gamma activity in humans: a possible role for object representation

Bertrand

Tallon‐Baudry

2000

International Journal of Psychophysiology

268

141

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Electroencephalographic rhythms from the depths of the parietal, occipital and temporal lobes in man

Cited by 80 publications

References 5 publications

Dynamics of Striate Cortical Activity in the Alert Macaque: II. Fast Time Scale Synchronization

Dynamics of Striate Cortical Activity in the Alert Macaque: II. Fast Time Scale Synchronization

High-frequency neural activity and human cognition: Past, present and possible future of intracranial EEG research

Oscillatory gamma activity in humans: a possible role for object representation

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