Analysis of the Electrical Response of the Human Cortex to Photic Stimulation

Walter, W. Grey; Dovey, V J; Shipton, Harold W.

doi:10.1038/158540a0

Cited by 193 publications

(53 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…photic driving response). After the report by Walter et al [3] in 1946, photic stimulation became a routine clinical examination method to enhance epileptic paroxysmal discharge.…”

Section: Introductionmentioning

confidence: 99%

Spatial Structure of Brain Electric Fields during Intermittent Photic Stimulation

et al. 2001

View full text Add to dashboard Cite

EEG changes in 27 young healthy male right-handed volunteers on intermittent photic stimulation (IPS) were estimated using global field power (GFP), EEG microstate modeling and analysis (EMMA), and low-resolution electromagnetic brain tomography (LORETA). The GFP significantly increased at flashing frequency and high harmonics. Three model maps were extracted with the EMMA procedure, from which high alternation rates of each microstate were observed. Moreover, two of the three model maps contributed very highly, occurring most frequently. LORETA imaging of the three model maps obtained from the EMMA procedure showed that both visual dominant cortical areas were activated, especially in the left hemisphere. These results suggest that IPS does not cause peculiar spatial configurations of the brain electric field, but does cause acceleration and deviation of the microstate alternation. Also, a functional laterality between hemispheres might be enhanced by symmetric IPS.

show abstract

“…photic driving response). After the report by Walter et al [3] in 1946, photic stimulation became a routine clinical examination method to enhance epileptic paroxysmal discharge.…”

Section: Introductionmentioning

confidence: 99%

Spatial Structure of Brain Electric Fields during Intermittent Photic Stimulation

et al. 2001

View full text Add to dashboard Cite

show abstract

“…Since Walter et al (1946), Gastaut et al (1948), Walter and Walter (1949), and Gastaut and Hunter (1950) reported that IPS by means of a stroboscope provoked paroxysmal discharges, this has become one of the common methods for EEG activation. Carterette and Symmes (1952), Marshall et al (1953), Brausch and Ferguson (1965), Takahashi (1973b), and Takahashi and Tsukahara (1973) reported that red-flicker evoked significant activating effects in producing paroxysmal discharges in comparison with other colored flicker stimuli.…”

mentioning

confidence: 99%

Generalized Paroxysmal Discharges Induced by Visual Stimuli and Eye Movements

Takahashi

Tsukahara

1975

Tohoku J. Exp. Med.

View full text Add to dashboard Cite

“…Since Adrian [1] and Walter [9] the EEG "activation methods" with light is a well known method in electroencephalography. Adrian conclude that light is a dominant stimulus in the central nervous system.…”

Section: Introductionmentioning

confidence: 99%

Alpha Rhythms Response to 10 Hz Flicker Is Wavelength Dependent

Milone¹,

Minelli²,

Cian³

2013

View full text Add to dashboard Cite

Since Adrian and Metthew [1], light may be considered the dominant stimulus for the brain. This statement is confirmed after the discovery of the suprachiasmatic nucleus (SCN) that regulates the master biological clock [2]. In 1998 the discovery of photopigment melanopsin in the ganglion cells of the retina, give new insight in the importance of the light in the pathophysiology of the brain [3]. We have studied the effect of flashing at 10 Hz with LED light of different wavelength on the response of the alpha system. We have shown that this response, consistent with the drive of the frequency and the augmentation of the voltage of the alpha rhythms, is far more significant with the RED-LED than GREEN-LED or BLUE-LED or WHITE-LED (three-chrome) light flashing. We stem the hypothesis that the amplitude increase and phase reset of the alpha waves produced by RED-LED flashing at 10 Hz may be due either to photobiomodulation on the cytochromo c oxidase [4,5] and/or of the photopigment melanopsin, at the level of the retinal ganglion cells, that reinforce the incoming cone-LHC signal and therefore the projection to the SCN [6] or to reinforcement of postsynaptic short term responsiveness, in retinal cone-LHC synapse, due to repetitive stimulation [7,8] or both. We may speculate that the increase of amplitude and phase reset of alpha rhythms, due to flashing at 10 Hz, is primarily modulated in the retina.

show abstract

Analysis of the Electrical Response of the Human Cortex to Photic Stimulation

Cited by 193 publications

References 2 publications

Spatial Structure of Brain Electric Fields during Intermittent Photic Stimulation

Spatial Structure of Brain Electric Fields during Intermittent Photic Stimulation

Generalized Paroxysmal Discharges Induced by Visual Stimuli and Eye Movements

Alpha Rhythms Response to 10 Hz Flicker Is Wavelength Dependent

Contact Info

Product

Resources

About