How much of surroundings can we perceive in our sleep? How disconnected are we from our environment? Many have investigated the perception of external sensory stimuli during sleep in order to understand how and why sometimes we can sleep through loud sounds, while at other times, we integrate them into our dreams or even wake up. Here we sought to investigate the different factors influencing the perception of sensory stimulation during sleep. In our experiment, we delivered tactile and auditory stimuli during sleep to 15 subjects, in alternation with periods of no stimulation. We woke subjects up between 8 to 12 times to interview them about their experiences. Our first observation is that despite receiving about a thousand stimulations each, subjects reported similar proportions of conscious experiences and dream recall compared to studies without stimulations reported in the literature. Sensory stimuli were present in the dream content in 37.5% of cases (31% in REM sleep and 41.2% in Non-REM sleep). Sleep stage (REM vs. NREM) did not have a statistically significant effect on the relation with sensory stimulation in dream content, although a relation with stimulation was less often described in REM than in Non-REM sleep. Surprisingly, even when there were no stimulations before the awakening, participants often reported dreaming of the stimulations. In fact, there were no significant differences in the number of times the stimulation appeared in the dreams during stimulation (42.6%) compared to no stimulation periods (31.2%). These preliminary results suggest that the experimental setting, consisting of sensory stimulations, is incorporated in a high proportion of dreams, regardless of whether a stimulation is delivered or not. This is an important aspect to consider for future studies aiming to assess the percentage of incorporation of stimuli into dreams.