There is now a biological reason why you shouldn't text and drive as new study has found that messaging with smartphones can change the rhythm of brain waves.
The team led by Mayo Clinic researcher William Tatum analyzed data from 129 patients. Their brain waves were monitored over a period of 16 months through electroencephalograms (EEGs) combined with video footage.
Tatum found a unique 'texting rhythm' in approximately 1 in 5 patients who were using their smartphone to text message while having their brain waves monitored.
The researchers asked patients to perform activities such as message texting, finger tapping and audio cellular telephone use in addition to tests of attention and cognitive function. Only text messaging produced the newly observed brain rhythm, which was different than any previously described brain rhythm.
The blue boxes show the texting rhythm present in a 22-year old patient who is texting with her right hand.
The unicity of the texting rhythm compared to other forms of mental stimulation could be caused by the combination of mental activity with motor and auditory-verbal neurological activity.
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No correlation was between the presence of a texting rhythm and the patients' demographic information, including age, gender, epilepsy type, presence of a brain lesion on MRI, or ictal EEG.
"We believe this new rhythm is an objective metric of the brain's ability to process non-verbal information during use of electronic devices and that it is heavily connected to a widely distributed network augmented by attention or emotion," Tatum commented.
Next to smartphones, the texting rhythm was also found in iPad users. The researchers hypothesized that the presence of a different brain wave rhythm while using mobile, handheld devices might be caused by their smaller screens, which require more concentration.
This finding could have significant implications for brain-computer interfacing, gaming, and, perhaps most importantly, driving, Tatum noted.
The study is published in Epilepsy & Behavior.