A polysomnogram was performed on a young mother suspected of having a sleep disorder. During a period of the night where she met electroencephalographic (EEG) sleep criteria on her polysomnogram, she correctly reported hearing the sleep technicians in the hallway outside of her room discussing a concert they attended the previous weekend. Close inspection of her EEG data during this period revealed a relative increase in high-frequency (desynchronized) EEG activity and decrease in EEG slow-waves (synchronized EEG activity). Which of the following phenomena is most likely associated with this finding? • wakefulness
• seizure
• insufficient hyperpolarization of thalamocortical neurons
during slow-wave sleep to prevent sensory experience
• amygdala hyperactivity during dreaming in REM sleep
• prefrontal hypo-activity during non-REM sleep