Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2016 May 1;39(5):1069–1082. doi: 10.5665/sleep.5758

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2016 Associated Professional Sleep Societies, LLC.

PMC Copyright notice

Auditory stimulation leads to early termination of sleep spindles in some trials. (A) Three representative example trials for the early termination of spindles upon auditory stimulation. In each example, top row shows the A1 local field potential (LFP, blue), middle row shows the detection procedure (10–16 Hz band-pass filtered signal in magenta, its envelope in red, and detected spindle in gray box), and the bottom depicting time-frequency dynamics (spectrogram). Vertical green line, sound onset. Note the abrupt termination of spindles upon auditory stimulation in all three instances. (B) Percentage of spindle terminations after loud tone stimuli. Blue bars show average number of spindle terminations in each time bin, and green lines depict the confidence interval (α = 0.05). Red and magenta bars show moments of statistically significant increases and decreases in spindle termination. (C) Mean time-frequency (spectrogram) representation of spindle events occurring along with loud tones, separately for (i) all trials (top, symmetric shape), and (ii) for “interrupted spindles” terminating between 150–250 ms after the sound (bottom, asymmetric shape, 30% of trials).