It is a type of brain wave with a frequency similar to that of an alpha wave 10Hz but the amplitude is much weaker and the kappa waves normally occur while a person is reading, thinking or dreaming

KAPPA WAVE: "Kappa Wave normally occurs when a person is dreaming, thinking or reading."
Cite this page: N., Pam M.S., "KAPPA WAVE," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/kappa-wave/ (accessed May 12, 2021).