Synchronized ∼15.0–35.0Hz oscillatory response to spatially modulated visual patterns in man

Wg, Sannita; Conforto, Silvia; Lopez, Luisa; Narici, L.

doi:10.1016/s0306-4522(98)00613-7

Cited by 27 publications

(29 citation statements)

References 20 publications

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“…Neurons in separate columns can synchronize their oscillatory responses, thought to be linked by long-range tangential connections [Gray, et al, 1989;Llinas 1990;Freiwald et al, 1995;Sannita et al, 1999].…”

Section: B Defining the Minicolumnmentioning

confidence: 99%

The Minicolumn and Evolution of the Brain

Buxhoeveden¹,

Casanova²

2002

Brain Behav Evol

112

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The minicolumn is generally considered an elementary unit of the neocortex in all mammalian brains. This essential building block has been affected by changes in the circuitry of the cortex during evolution. Researchers believe that enlargement of the cortical surface occurs through the addition of minicolumns rather than of single neurons. Therefore, minicolumns integrate cortical encephalization with organization. Despite these insights, few studies have analyzed the morphometry of the minicolumn to detect subtle but important differences among the brains of diverse mammals. The notion that minicolumns are essentially unchanged across species is challenged by strong evidence to the contrary. Because they are subject to species-specific variation, they can be used as a way to study evolutionary changes. Unfortunately, comparative studies are marred by a lack of standardized techniques, tissue preparation, cortical regions, or anatomical feature studied. However, recent advances in methodology enable standardized, quantified comparisons of minicolumn morphology.

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Section: B Defining the Minicolumnmentioning

confidence: 99%

The Minicolumn and Evolution of the Brain

Buxhoeveden¹,

Casanova²

2002

Brain Behav Evol

112

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“…In man, the visual cortex is activated by external dynamic white noise, with electrophysiological cortical responses that implicate signal/noise interaction and SR phenomena (Simonotto et al 1997;Mori and Kai 2002;Kitajo et al 2003;Sorrentino et al 2006). Implications also in lower level brain functional organization seem possible; some compatibility of the threshold SR model with, or adaptation to the activated brain arrangement are also conceivable (Ito 2000;Sannita 2007). …”

Section: Resonance Noise and Neuronal Functionmentioning

confidence: 99%

“…Oscillations in the gamma band (*20-80 Hz) intrinsic to the properties of resting neuronal membrane are enhanced by synaptic interaction and network mechanisms, thus featuring a distinctive property of inhibitory interneuron meditating in code interaction (Llinás 1988;Bressler 1990;Engel et al 1991;Steriade et al 1996;Laurent 1996;Gray and McCormick 1996;Sannita et al 1999;Traub and Jefferys 1999; see for references : Singer 1993, Singer andGray 1995;Gray 1999;Sannita 2000Sannita , 2005. Phase synchronization in the gamma interval is thought to mediate in the organization of temporally coherent, but spatially segregated, neuronal activities in feature specification and perceptual/cognitive binding (Rodriguez et al 1999;Herculano-Houzel et al 1999;Heinrich and Back 2001;Freeman and Rogers 2002;Kanamaru 2006;Canolty et al 2006;Melloni et al 2007).…”

Section: Function-related Gamma Oscillationsmentioning

confidence: 99%

Neuronal functional diversity and collective behaviors: a scientific case

Sannita

2009

Cogn Process

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A major issue in today's neuroscience is how the brain complex and highly flexible organization emerges from its individual components. Robustness of neuronal properties with weak linkages between regulatory processes are suggested to account for the adaptive, tunable, multistable dynamics, the coding schemes and the complexity of neuronal functional (sub)systems. Interneurons and neurotransmitter diversity, resonance phenomena due to properties of the cell or network, time/frequency-dependent activation of dedicated neuronal assemblies, code- and frequency-specific oscillations interact in determining the brain functional setup and operations. Despite the scientific relevance, comprehensive theories are not yet available, but the scenario--however incomplete and incompletely characterized--is promising and warrants further investigation.

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“…For instance, modulation of synchronicity of responses in V 1 cortex is complementary to changes in spiking rate in the enhancement of saliency of neuronal responses [33]; as an other example, hippocampal neuronal assemblies independently code for spatial and episodic memory [34]. Gamma band (∼20-80 Hz) oscillations intrinsic to the resting neuron membrane and enhanced by synaptic interaction and network mechanisms are the suggested property of inhibitory interneuron mediation of code interaction [31,[34][35][36][37][38][39][40][41][42][43][44][45]; see [46,47] for reference.…”

Section: Neural Codes and Code Interplaymentioning

confidence: 99%

“…Oscillations in the gamma band are a peculiar specimen of this functional arrangement. Phase synchronization in the gamma band frequency (∼20-80 Hz) is thought to mediate in the organization of temporally coherent, but spatially segregated, neuronal activities in feature specification and perceptual/cognitive binding [42,81,[83][84][85][86][87][88][89][90]. Cortical gamma oscillations of neuronal membrane (local field) spiking rate are characteristic in frequency and depend on (pre)synaptic input with a common mean phase.…”

Section: Function-related Neuronal Oscillations In Cortical Networkmentioning

confidence: 99%

Neuronal Functional Diversity and Collective Behaviors

Sannita

2008

J Biol Phys

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A major question in today's neuroscience is how the brain's complex operations and organization emerge from individual components. The robustness of neuronal properties with flexible linkages between regulatory processes conceivably accounts for the adaptive, tunable, multistable dynamics; the coding schemes; and the complexity of neuronal functional (sub)systems. Interneurons and neurotransmitter diversity, resonance phenomena due to properties of the cell, time/frequency-dependent activation of dedicated neuronal assemblies, and code-and frequency-specific oscillations interact in determining the brain functional setup and operations. Such an arrangement would also provide the functional requirements for access to neural mechanisms, dedicated neuronal circuitry and the proper timing allowing for the selective differentiation among cortical neurons due to performing in different tasks. No comprehensive theory or systematic methodological approach appears yet conceivable. The scenario, however incomplete and incompletely characterized, is nevertheless promising and warrants further investigation.

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Synchronized ∼15.0–35.0Hz oscillatory response to spatially modulated visual patterns in man

Cited by 27 publications

References 20 publications

The Minicolumn and Evolution of the Brain

The Minicolumn and Evolution of the Brain

Neuronal functional diversity and collective behaviors: a scientific case

Neuronal Functional Diversity and Collective Behaviors

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