[Answer] What stage of sleep are you most likely experiencing if an EEG of your brain activity showed sleep spindles and K-complexes?

Answer: 2
What stage of sleep are you most likely experiencing if an EEG of your brain activity showed sleep spindles and K-complexes?

A K-complex is a waveform that may be seen on an electroencephalogram ( EEG ).It occurs during stage 2 of NREM sleep .It is the “largest event in healthy human EEG “. They are more frequent in the first sleep cycles. K- complexes have two proposed functions: first suppressing cortical arousal in response to stimuli that the sleeping brain evaluates not to signal danger and second aiding sleep …

Overview. This period of sleep is called slow-wave sleep because the EEG activity is synchronized characterised by slow waves with a frequency range of 0.5–4.5 Hz …

Sleep spindles and K- complexes . Sleep spindles are unique to NREM sleep . The most spindle activity occurs at the beginning and the end of NREM. Sleep spindles involve activation in the brain in the areas of the thalamus anterior cingulate and insular cortices and the superior temporal gyri. They have different lengths.

Non-rapid eye movement sleep – Wikipedia

K-complex – Wikipedia

Hypnogram – Wikipedia

Delta waves are high amplitude neural oscillations with a frequency between 0.5 and 4 hertz.Delta waves like other brain waves can be recorded with electroencephalography ( EEG ) and are usually associated with the deep stage 3 of NREM sleep also known as slow-wave sleep (SWS) and aid in characterizing the depth of sleep .

Hypnagogia also referred to as “hypnagogic hallucinations” is the experience of the transitional state from wakefulness to sleep : the hypnagogic state of consciousness during the onset of sleep . (The opposite transitional state from sleep into wakefulness is described as hypnopompic.)Mental phenomena that may occur during this “threshold consciousness” phase include hallucinations …

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