Figure 5.

Representative single-unit auditory responses during spindle and nonspindle trials. (A) Representative auditory responses of a putative single unit during spindle and nonspindle trials (rows) for eight different stimuli (columns). Rows (top to bottom) correspond to stimuli names and intensities, timing and structure of acoustic stimulus (pink over cyan), followed by raster plots and peristimulus time histograms (PSTHs) for all trials, spindle trials, and non-spindle trials. Inset on upper left shows mean ± standard error of the mean (SEM) of action potential waveform. Firing rate in all bar graphs is expressed in terms of percent of baseline and is shown with the same scale across all states and stimuli. Note that neuronal responses are nearly indistinguishable visually between spindle and non-spindle trials. (B) Two representative trials denoting spike responses during spindle (pink, bottom) and nonspindle (yellow, top) trials. Left panels show A1 local field potential (LFP) whereas right panels show single-unit spiking activity. Note robust response that persists during spindle occurrence.