Loneliness as a predictor of posttraumatic stress disorder symptom change among treatment-seeking US military veterans.

Cortical Auditory Evoked Potentials (CAEP) allow the assessment of the entire auditory system from the brainstem to the auditory cortex. CAEP recordings can be obtained through different types of stimuli, such as and/or more complex stimuli such as speech. CAEP has proven to be an effective method in investigating the arrival of sound information to the auditory cortex, especially the auditory processing of information, since the capture of these potentials reflects the cortical activity involved in the brain's discrimination, integration and attention skills. The responses generated by CAEP correspond to a series of peaks with negative (N) and positive (P) polarities, forming a P1-N1-P2 wave complex. These potentials are analyzed regarding their latency and amplitude, considered as the most important parameters to be analyzed.