## 2 Materials and Methods
### Cognitive Performance
#### 2.5.3 Positive Correlation of RF-EMF Exposure on Cognitive Abilities
\begin{table}
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} \hline \hline
**Reference** & **Study Population** & **Exposure Source** & **Tests** & **Results/Conclusion** & **Remarks** \\ \hline
[37] & 439 adolescents & Various wireless devices & Memory performance scores & RF-EMF exposure may impair adolescent memory function & Further research needed for longer exposures \\ \hline
[25] & 55 people & Mobile phones & Neuropsychological tasks & No medium-term effect of daily mobile phone use on cognitive function & Additional research required for long-term exposures \\ \hline
[38] & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} A total of 317 grade pupils \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Mobile phone use \\ \end{tabular} & \
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Exposure \\ \end{tabular} &
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Increased mobile phone use \\ linked to quicker and less \\ accurate responses to \\ cognitive function \\ \end{tabular} & Further research needed on cellphone use and cognitive function \\ \hline
[34] & Not specified & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} SMS and \\ voice calls \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Cognitive \\ response time \\ \end{tabular} & \
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Fluctuations in cognitive \\ response time associated \\ with SMS and voice call exposure \\ \end{tabular} &
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} The study relied on \\ self-reported mobile phone \\ use, which may not be \\ accurate or reliable \\ \end{tabular} \\ \hline
[35] & Not specified & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} Typical \\ GSM phone \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Cognitive tasks \\ \end{tabular} & \
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} Exposure to specific brain \\ region delays left-hand \\ reaction time in \\ cognitive tasks \\ \end{tabular} &
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Further research needed \\ for validation \\ \end{tabular} \\ \hline
[39] & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} A total of 18 participants \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} 3G UMTS- \\ based phones \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Health symptoms, \\ cognition \\ \end{tabular} & \
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} No negative effects of 3G \\ phone RF-EMF on sleep and cognition \\ \end{tabular} &
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Study involved a small \\ sample size and short \\ exposure duration \\ \end{tabular} \\ \hline
[26] & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} A total of 85 medical students \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} 3G and 4G cellular phones \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Reaction time, short- \\ term memory \\ \end{tabular} & \
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Electromagnetic waves \\ affect response time, no effect on \\ short-term memory \\ \end{tabular} &
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Further investigation into \\ effect on \\ short-term memory \\ \end{tabular} \\ \hline
[40] & Not specified & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} RF waves \\ from gadgets \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Brain signal \\ measurements \\ \end{tabular} & \
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} RF signals may lead to \\ cognitive deficits \\ \end{tabular} &
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} More detailed examinations \\ and studies are required \\ \end{tabular} \\ \hline
[27] & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} A total of 60 young adults \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} 3G and 4G \\ RF-EMF exposure \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} 3G and 4G \\ exposure time \\ \end{tabular} & \
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} 3G and 4G \\ exposure time \\ \end{tabular} &
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Not specified \\ \end{tabular} \\ \hline
[41] & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Preadolescence and adolescence \\ \end{tabular} & Not specified & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Neurocognitive \\ tests \\ \end{tabular} & \
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Higher RF-EMF exposure \\ associated with lower \\ non-verbal intelligence \\ scores in pre-adolescents \\ \end{tabular} &
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} No significant relationship \\ found for other cognitive \\ function outcomes \\ \end{tabular} \\ \hline
[42] & 123 boys & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Environmental \\ RF-EMFs \\ \end{tabular} & \begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Neurobehavioral function \\ \end{tabular} & \
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} Higher RF-EMF exposure \\ associated with lower \\ non-verbal intelligence \\ scores in pre-adolescents \\ \end{tabular} &
\begin{tabular}{p{56.9 pt} p{56.9 pt} p{56.9 pt}} No significant effect on other \\ peripheral \\ functioning tasks \\ \end{tabular} \\ \hline \hline \end{tabular}
\end{table}