Its effects on a wide range of cognitive functions have not been tested until now.

BBC: Pill to boost brain power

He was best known for his pioneering efforts in researching the development of cognitive functions in children.

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There is also a crippling loss of nerve cells in brain areas involved in cognitive functions which leads to the main behavioural symptom, failure of the memory.

ECONOMIST: Disposing of dementia

The electroencephalograph picks up cognitive functions in 12 different regions of the brain, showing memory recall and the level of attention paid to visual and aural stimuli.

FORBES: Magazine Article

One pertinent observation is that dolphins, whales and their kind have brains as anatomically complex as those of humans, and that these brains contain a particular type of nerve cell, known as a spindle cell, that in humans is associated with higher cognitive functions such as abstract reasoning.

ECONOMIST: A declaration of the rights of cetaceans

The NTSB cited research that showed most drivers experience a decline in both cognitive and visual functions with a BAC of 0.05.

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Dr Roi Cohen Kadosh, study author from the department of experimental psychology at the University of Oxford, said the noise stimulation group showed improvements in cognitive and brain functions compared with the control group.

BBC: Brain stimulation promises 'long-lasting' maths boost