@article{MTMT:1121143,
	title = {Frequency of gamma activity is modulated by motivation in the auditory cortex of cat.},
	url = {https://m2.mtmt.hu/api/publication/1121143},
	author = {Karmos, György and Lakatos, Péter and Pincze, Zsuzsa and Rajkai, Csaba and Ulbert, István},
	doi = {10.1556/ABiol.53.2002.4.8},
	journal-iso = {ACTA BIOL HUNG},
	journal = {ACTA BIOLOGICA HUNGARICA (1983-2018)},
	volume = {53},
	unique-id = {1121143},
	issn = {0236-5383},
	abstract = {Repetitive acoustic stimuli elicit steady-state response (SSR) 
		in the gamma-band 
		both in humans and in mammals. Our aim was to investigate 
		changes of the
		spontaneous gamma activity and the SSR in the auditory cortex of 
		cats in the
		background of an instrumental conditioning situation. Epidural 
		electrodes were
		chronically implanted above the auditory neocortex. The 
		presentation rate of the 
		clicks varied between 20 and 65/s. Spontaneous EEG and SSR were 
		collected in
		three behavioral states: in an indifferent environment, in the 
		instrumental cage 
		while the cat was waiting for the light CS, and when she stepped 
		on the pedal and
		was waiting for the meat reward. Using different repetition rate 
		clicks we
		determined which stimulus rate elicited the largest SSR in these 
		three
		situations. In quiet animal the highest SSR appeared at 28-30/s. 
		Before and
		during the CS the optimal stimulus rate shifted to 32-38/s. The 
		frequency of the 
		spontaneous gamma activity changed in parallel way depending on 
		the situation. We
		conclude that both the SSR and the spontaneous gamma activity 
		reflect resonant
		activity of the same neuronal circuit of the auditory cortex, 
		and it is modulated
		by the motivational state of the animal.},
	year = {2002},
	eissn = {1588-256X},
	pages = {473-483},
	orcid-numbers = {Ulbert, István/0000-0001-9941-9159}
}