Interplay of orientation selectivity and the power of low- and high-gamma bands in the cat primary visual cortex

Bharmauria, Vishal; Bachatene, Lyes; Ouelhazi, Afef; Cattan, Sarah; Chanauria, Nayan; Sosso, Faustin Armel Etindele; Rouat, Jean; Molotchnikoff, Stéphane

doi:10.1016/j.neulet.2016.03.033

Cited by 10 publications

(14 citation statements)

References 36 publications

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“…Interestingly, the strength of neuronal responses in SC was reported to be also greater for the direction away from area centralis (Hoffmann, 1972;Schoppmann and Hoffmann, 1979), what agrees with a positive correlation between firing rate and oscillation strength found in our study. Different oscillations induced by different stimulation (for example different directions of stimulus movement) have been observed in the primary visual cortex (Friedman-Hill et al 2000;Samonds and Bonds, 2005;Feng et al 2010;Womelsdorf et al 2012;Bharmauria et al, 2015;Bharmauria et al, 2016) and the premotor cortex (forearm movements; Lebedev and Wise, 2000). The majority of stimulus-phase-locked oscillations in our data were stronger for movement in the preferred direction ( Fig 6).…”

Section: Stimulus-phase-independent Oscillations In the Sscsupporting

confidence: 52%

Oscillations in spontaneous and visually evoked neuronal activity in the superficial layers of the cat’s superior colliculus

Foik

Ghazaryan

Waleszczyk

2018

Preprint

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Number of words for Abstract: 262 Number of words for Introduction: 660Number of words for Manuscript: 8261 AbstractOscillations are ubiquitous features of neuronal activity in sensory systems and are considered as a substrate for the integration of sensory information. Several studies have described oscillatory activity in the geniculate visual pathway, but little is known about this phenomenon in the extrageniculate visual pathway. We describe oscillations in evoked and background activity in the cat's superficial layers of the superior colliculus, a retinorecipient structure in the extrageniculate visual pathway. Extracellular singleunit activity was recorded during periods with and without visual stimulation under isoflurane anesthesia in the mixture of N 2 O/O 2 . Autocorrelation, FFT and renewal density analyses were used to detect and characterize oscillations in the neuronal activity. Oscillations were common in the background and stimulus-evoked activity.Frequency range of background oscillations spanned between 5 -90 Hz. Oscillations in evoked activity were observed in about half of the cells and could appear in two formsstimulus-phase-locked (10 -100 Hz), and stimulus-phase-independent (8 -100 Hz) oscillations. Stimulus-phase-independent and background oscillatory frequencies were very similar within activity of particular neurons suggesting that stimulus-phaseindependent oscillations may be a form of enhanced "spontaneous" oscillations.Stimulus-phase-locked oscillations were present in responses to moving and flashing stimuli. In contrast to stimulus-phase-independent oscillations, the strength of stimulusphase-locked oscillations was positively correlated with stimulus velocity and neuronal firing rate. Our results suggest that in the superficial layers of the superior colliculus stimulus-phase-independent oscillations may be generated by the same mechanism(s) that lie in the base of "spontaneous" oscillations, while stimulus-phase-locked oscillations may result from interactions within the intra-collicular network and/or from a phase reset of oscillations present in the background activity.Abbreviations ACH, autocorrelation histogram; cACH, corrected autocorrelation histogram; DiI, 1,1'dioctadecyl-3.3,3',3'-tetramethylindocarbocyanine perchlorate: ECoG, electrocorticogram; FFT, Fast Fourier Transform; ISI, interspike interval histogram;LGN, lateral geniculate nucleus; PSTH, peri-stimulus time histogram; r, Pearson correlation coefficient; rACH, raw autocorrelation histogram; RDA, renewal density analysis; RF, receptive field; SC, superior colliculus; sSC, superficial layers of superior colliculus; std(FFT), standard deviation of power spectrum;

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Section: Stimulus-phase-independent Oscillations In the Sscsupporting

confidence: 52%

Oscillations in spontaneous and visually evoked neuronal activity in the superficial layers of the cat’s superior colliculus

Foik

Ghazaryan

Waleszczyk

2018

Preprint

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“…Interestingly, two gamma peaks in the frequency spectrum have been previously reported in the visual cortex of humans (Kucewicz et al 2017), cats (Fig. 4A-C) (Castelo-Branco et al 1998;Bharmauria et al 2016;Han et al 2020;Wang et al 2021), monkeys (Murty et al 2018 and Fig. 4D is unpublished data for awake monkey V1 from Dajun Xing's lab) and rats (Oke et al 2010).…”

Section: How Does Gamma Band Activity Help Information Integration?mentioning

confidence: 69%

Gamma rhythms in the visual cortex: functions and mechanisms

2021

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Gamma-band activity, peaking around 30–100 Hz in the local field potential's power spectrum, has been found and intensively studied in many brain regions. Although gamma is thought to play a critical role in processing neural information in the brain, its cognitive functions and neural mechanisms remain unclear or debatable. Experimental studies showed that gamma rhythms are stochastic in time and vary with visual stimuli. Recent studies further showed that multiple rhythms coexist in V1 with distinct origins in different species. While all these experimental facts are a challenge for understanding the functions of gamma in the visual cortex, there are many signs of progress in computational studies. This review summarizes and discusses studies on gamma in the visual cortex from multiple perspectives and concludes that gamma rhythms are still a mystery. Combining experimental and computational studies seems the best way forward in the future.

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“…Interestingly, the strength of neuronal responses in SC was reported to be also greater for the direction away from area centralis (Hoffmann, 1972; Schoppmann and Hoffmann, 1979), what agrees with a positive correlation between firing rate and oscillation strength found in our study. Different oscillations induced by different stimulation (for example different directions of stimulus movement) have been observed in the primary visual cortex (Friedman-Hill et al, 2000; Samonds and Bonds, 2005; Feng et al, 2010; Womelsdorf et al, 2012; Bharmauria et al, 2015, 2016) and the premotor cortex (forearm movements; Lebedev and Wise, 2000). The majority of stimulus-phase-locked oscillations in our data were stronger for movement in the preferred direction (Figure 6).…”

Section: Discussionmentioning

confidence: 99%

Oscillations in Spontaneous and Visually Evoked Neuronal Activity in the Superficial Layers of the Cat's Superior Colliculus

Foik

Ghazaryan

Waleszczyk

2018

Front. Syst. Neurosci.

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Oscillations are ubiquitous features of neuronal activity in sensory systems and are considered as a substrate for the integration of sensory information. Several studies have described oscillatory activity in the geniculate visual pathway, but little is known about this phenomenon in the extrageniculate visual pathway. We describe oscillations in evoked and background activity in the cat's superficial layers of the superior colliculus, a retinorecipient structure in the extrageniculate visual pathway. Extracellular single-unit activity was recorded during periods with and without visual stimulation under isoflurane anesthesia in the mixture of N2O/O2. Autocorrelation, FFT and renewal density analyses were used to detect and characterize oscillations in the neuronal activity. Oscillations were common in the background and stimulus-evoked activity. Frequency range of background oscillations spanned between 5 and 90 Hz. Oscillations in evoked activity were observed in about half of the cells and could appear in two forms —stimulus-phase-locked (10–100 Hz), and stimulus-phase-independent (8–100 Hz) oscillations. Stimulus-phase-independent and background oscillatory frequencies were very similar within activity of particular neurons suggesting that stimulus-phase-independent oscillations may be a form of enhanced “spontaneous” oscillations. Stimulus-phase-locked oscillations were present in responses to moving and flashing stimuli. In contrast to stimulus-phase-independent oscillations, the strength of stimulus-phase-locked oscillations was positively correlated with stimulus velocity and neuronal firing rate. Our results suggest that in the superficial layers of the superior colliculus stimulus-phase-independent oscillations may be generated by the same mechanism(s) that lie in the base of “spontaneous” oscillations, while stimulus-phase-locked oscillations may result from interactions within the intra-collicular network and/or from a phase reset of oscillations present in the background activity.

show abstract

Interplay of orientation selectivity and the power of low- and high-gamma bands in the cat primary visual cortex

Cited by 10 publications

References 36 publications

Oscillations in spontaneous and visually evoked neuronal activity in the superficial layers of the cat’s superior colliculus

Oscillations in spontaneous and visually evoked neuronal activity in the superficial layers of the cat’s superior colliculus

Gamma rhythms in the visual cortex: functions and mechanisms

Oscillations in Spontaneous and Visually Evoked Neuronal Activity in the Superficial Layers of the Cat's Superior Colliculus

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