@article{ Wrobel00,
  author = {Wrobel, A.},
  title = {Beta activity: a carrier for visual attention},
  journal = {Acta Neurobiol Exp (Warsz)},
  year = {2000},
  volume = {60},
  pages = {247-60},
  number = {2},
  abstract = { Department of Neurophysiology, Nencki Institute of Experimental Biology,
	Warsaw, Poland. wrobel@nencki.gov.pl The alpha (8-13 Hz), beta (15-25
	Hz) and gamma (30-60 Hz) bands of the EEG have been long studied
	clinically because of their putative functional importance. Old experimental
	results indicate that repetitive stimulation of the visual pathway
	evokes synchronous responses at the cortical level with a gain that
	depends on frequency; oscillations within relevant bands are less
	damped at subsequent processing levels than others. Our current results
	show in the cat that cortico-geniculate feedback has a build-in potentiation
	mechanism that operates at around the beta frequency and activates
	thalamic cells thus lowering the threshold for visual information
	transmission. We have also shown that enhanced beta activity is propagated
	along this feedback pathway solely during attentive visual behavior.
	This activity consists of 300-1,000 ms bursts that correlate in time
	with gamma oscillatory events. Beta-bursting activity spreads to
	all investigated visual centers, including the lateral posterior
	and pulvinar complex and higher cortical areas. Other supporting
	data are discussed that are concerned with the enhanced beta activity
	during attentive-like behavior of various species, including humans.
	Finally, we put forward a general hypothesis which attributes the
	appearance of oscillations within the alpha, beta and gamma bands
	to different activation states of the visual system. According to
	this hypothesis, alpha activity characterizes idle arousal of the
	system, while beta bursts shift the system to an attention state
	that consequently allows for gamma synchronization and perception.
	Publication Types: * Review * Review Literature}
}

{"_id":"3oiWE3AgL6JGvNFoz","bibbaseid":"wrobel-betaactivityacarrierforvisualattention-2000","downloads":0,"creationDate":"2015-02-08T05:15:01.122Z","title":"Beta activity: a carrier for visual attention","author_short":["Wrobel, A."],"year":2000,"bibtype":"article","biburl":"http://cnslab.mb.jhu.edu/niebase.bib","bibdata":{"abstract":"Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland. wrobel@nencki.gov.pl The alpha (8-13 Hz), beta (15-25 Hz) and gamma (30-60 Hz) bands of the EEG have been long studied clinically because of their putative functional importance. Old experimental results indicate that repetitive stimulation of the visual pathway evokes synchronous responses at the cortical level with a gain that depends on frequency; oscillations within relevant bands are less damped at subsequent processing levels than others. Our current results show in the cat that cortico-geniculate feedback has a build-in potentiation mechanism that operates at around the beta frequency and activates thalamic cells thus lowering the threshold for visual information transmission. We have also shown that enhanced beta activity is propagated along this feedback pathway solely during attentive visual behavior. This activity consists of 300-1,000 ms bursts that correlate in time with gamma oscillatory events. Beta-bursting activity spreads to all investigated visual centers, including the lateral posterior and pulvinar complex and higher cortical areas. Other supporting data are discussed that are concerned with the enhanced beta activity during attentive-like behavior of various species, including humans. Finally, we put forward a general hypothesis which attributes the appearance of oscillations within the alpha, beta and gamma bands to different activation states of the visual system. According to this hypothesis, alpha activity characterizes idle arousal of the system, while beta bursts shift the system to an attention state that consequently allows for gamma synchronization and perception. Publication Types: * Review * Review Literature","author":["Wrobel, A."],"author_short":["Wrobel, A."],"bibtex":"@article{ Wrobel00,\n author = {Wrobel, A.},\n title = {Beta activity: a carrier for visual attention},\n journal = {Acta Neurobiol Exp (Warsz)},\n year = {2000},\n volume = {60},\n pages = {247-60},\n number = {2},\n abstract = { Department of Neurophysiology, Nencki Institute of Experimental Biology,\n\tWarsaw, Poland. wrobel@nencki.gov.pl The alpha (8-13 Hz), beta (15-25\n\tHz) and gamma (30-60 Hz) bands of the EEG have been long studied\n\tclinically because of their putative functional importance. Old experimental\n\tresults indicate that repetitive stimulation of the visual pathway\n\tevokes synchronous responses at the cortical level with a gain that\n\tdepends on frequency; oscillations within relevant bands are less\n\tdamped at subsequent processing levels than others. Our current results\n\tshow in the cat that cortico-geniculate feedback has a build-in potentiation\n\tmechanism that operates at around the beta frequency and activates\n\tthalamic cells thus lowering the threshold for visual information\n\ttransmission. We have also shown that enhanced beta activity is propagated\n\talong this feedback pathway solely during attentive visual behavior.\n\tThis activity consists of 300-1,000 ms bursts that correlate in time\n\twith gamma oscillatory events. Beta-bursting activity spreads to\n\tall investigated visual centers, including the lateral posterior\n\tand pulvinar complex and higher cortical areas. Other supporting\n\tdata are discussed that are concerned with the enhanced beta activity\n\tduring attentive-like behavior of various species, including humans.\n\tFinally, we put forward a general hypothesis which attributes the\n\tappearance of oscillations within the alpha, beta and gamma bands\n\tto different activation states of the visual system. According to\n\tthis hypothesis, alpha activity characterizes idle arousal of the\n\tsystem, while beta bursts shift the system to an attention state\n\tthat consequently allows for gamma synchronization and perception.\n\tPublication Types: * Review * Review Literature}\n}","bibtype":"article","id":"Wrobel00","journal":"Acta Neurobiol Exp (Warsz)","key":"Wrobel00","number":"2","pages":"247-60","title":"Beta activity: a carrier for visual attention","type":"article","volume":"60","year":"2000","bibbaseid":"wrobel-betaactivityacarrierforvisualattention-2000","role":"author","urls":{},"downloads":0},"search_terms":["beta","activity","carrier","visual","attention","wrobel"],"keywords":[],"authorIDs":[],"dataSources":["ErLXoH8mqSjESnrN5"]}