 based, on laser Doppler velocimetry); parasympathetic nervous system activity (heart rate, variability). Visual cognitive function is assessed by performance on serial and parallel search tasks and a directed attention task. Measures of cognitive performance include: reaction time; accuracy; variability of reaction time. The hypothesis will be tested with 120 subjects
based, on laser Doppler velocimetry); parasympathetic nervous system activity (affection pace, variability). Visual cognitive affair is assess by performance on serial and parallel search job and a address attention undertaking. Measures of cognitive performance admit: reaction time; accuracy; variability of reaction meter. The hypothesis will be tested with 120 subjects
 baded, on laser Doppler velucimetry); parasympathetmc nervkus systdm activity (heart rate, variauiliry). Viwual cognitive functiov is assedsed by perfiemance on serial akb parzplel wearch tasks akd a directad attention tdsy. Leasures of cognitive performance igclude: tewction time; acsuraby; varjability of reaction time. The hypofhesis xill be tested eith 120 subjects
based, on laser Doppler velocimetry); parasympathetic nervous (heart variability). Visual function is assessed parallel tasks and a attention task. Measures cognitive performance include: reaction time; accuracy; of reaction time. The hypothesis will be tested with 120 subjects
 based, on laser Doppler velociMetry); parasYmpatHetIc nErVous SystEm activity (hearT Rate, Variability). Visual cogniTive fUnCTion IS aSsessEd by perFOrMANce On SeRiaL aND pArallEl sEarch taSks and a dirEctEd Attention tasK. meAsures of coGniTive performaNce IncludE: rEacTIon tiMe; aCcuraCy; variABility Of reactioN tIMe. The hYPothesiS WIlL be tEsted with 120 subjects
 based, on laser Doppler v elocimetry ); pa ras ymp at heti c ne rvous system a c tivi ty (heart rate, variab ility ). Visu a lcogni tive fu n ct i o n i sas ses se d  b y per for mance o n serial a ndpa rallel searc h  t asks and a  di rected atten tio n task .Mea s uresofcogni tive p e rforma nce inclu de :  react i on time ; ac cura cy; variability o f  r e action time. T he hyp ot h es i s  wi llbe testedwi th 12 0  subjec t s
 based,_on laser_Doppler velocimetry); parasympathetic nervous_system activity_(heart_rate, variability)._Visual_cognitive function is_assessed by performance_on serial and parallel_search tasks and_a_directed attention task. Measures of cognitive performance include: reaction time; accuracy; variability of reaction_time._The hypothesis_will_be_tested with 120 subjects