The effects of theta transcranial alternating current stimulation (tACS) on fluid intelligence. Pahor, A. & Jaušovec, N. International Journal of Psychophysiology, 93(3):322–331, September, 2014. ZSCC: 0000063
The effects of theta transcranial alternating current stimulation (tACS) on fluid intelligence [link]Paper  doi  abstract   bibtex   
The objective of the study was to explore the influence of transcranial alternating current stimulation (tACS) on resting brain activity and on measures of fluid intelligence. Theta tACS was applied to the left parietal and left frontal brain areas of healthy participants after which resting electroencephalogram (EEG) data was recorded. Following sham/active stimulation, the participants solved two tests of fluid intelligence while their EEG was recorded. The results showed that active theta tACS affected spectral power in theta and alpha frequency bands. In addition, active theta tACS improved performance on tests of fluid intelligence. This influence was more pronounced in the group of participants that received stimulation to the left parietal area than in the group of participants that received stimulation to the left frontal area. Left parietal tACS increased performance on the difficult test items of both tests (RAPM and PF&C) whereas left frontal tACS increased performance only on the easy test items of one test (RAPM). The observed behavioral tACS influences were also accompanied by changes in neuroelectric activity. The behavioral and neuroelectric data tentatively support the P-FIT neurobiological model of intelligence.
@article{pahor_effects_2014,
	title = {The effects of theta transcranial alternating current stimulation ({tACS}) on fluid intelligence},
	volume = {93},
	issn = {0167-8760},
	url = {http://www.sciencedirect.com/science/article/pii/S0167876014001664},
	doi = {10.1016/j.ijpsycho.2014.06.015},
	abstract = {The objective of the study was to explore the influence of transcranial alternating current stimulation (tACS) on resting brain activity and on measures of fluid intelligence. Theta tACS was applied to the left parietal and left frontal brain areas of healthy participants after which resting electroencephalogram (EEG) data was recorded. Following sham/active stimulation, the participants solved two tests of fluid intelligence while their EEG was recorded. The results showed that active theta tACS affected spectral power in theta and alpha frequency bands. In addition, active theta tACS improved performance on tests of fluid intelligence. This influence was more pronounced in the group of participants that received stimulation to the left parietal area than in the group of participants that received stimulation to the left frontal area. Left parietal tACS increased performance on the difficult test items of both tests (RAPM and PF\&C) whereas left frontal tACS increased performance only on the easy test items of one test (RAPM). The observed behavioral tACS influences were also accompanied by changes in neuroelectric activity. The behavioral and neuroelectric data tentatively support the P-FIT neurobiological model of intelligence.},
	language = {en},
	number = {3},
	urldate = {2020-10-06},
	journal = {International Journal of Psychophysiology},
	author = {Pahor, Anja and Jaušovec, Norbert},
	month = sep,
	year = {2014},
	note = {ZSCC: 0000063},
	keywords = {EEG, ERD/ERS, Fluid intelligence, Theta frequency, tACS},
	pages = {322--331},
}

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