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The article focuses on the peculiar behavior exhibited by an octopus named Costello during sleep, resembling actions that suggest dreaming. Topics include Costello's change in skin color and texture, his defensive and evasive maneuvers, and the speculation that these actions may reflect dream-like experiences for the octopus.

The article cites a study published in the journal Sleep by researchers from Johns Hopkins University School of Medicine to state that individuals forced to awaken multiple times during their sleep pattern exhibited a greater decline in positive mood than those who slept a fewer number of hours. The article also states that the former had less slow-wave sleep, which is the third stage of non-rapid eye movement sleep (NREM). The article presents comments from Johns Hopkins assistant professor Patrick H. Finan.

The article discusses napping. Topics covered include the benefits of naps of various durations, rapid-eye-movement and non-rapid-eye-movement sleep, the optimum time of day to take a nap, dreams during a nap as an indication of sleep deprivation, and a study by psychology professor Leon Lack that found ten-minute naps to be particularly beneficial.

The article reports on a study conducted by a group of German researchers, who claimed that recordings from electrodes implanted in the brain of lizards determines the sleep stages of bearded dragon (Pogona vitticeps).

The article discusses sleep deprivation in the U.S. By one estimate over a quarter of Americans get less than six hours of sleep each night. Consequences may include a heightened risk of cardiovascular disease. Zeo Inc. manufactures a sleep monitor than can be used to determine how much Rapid Eye Movement (REM) sleep a person is getting.

The article presents information on an interactive sleep museum which is a resurrection of dream stages. Students visit this museum after four weeks of lessons on brain function and sleep. The museum's purpose is to demonstrate an understanding of how bodily systems are connected and how that play out during sleep.

The article discusses the research findings conducted by scientist at the European Molecular Biology Laboratory in Germany which reveals the activity of human gene involving in making melatonin and other sleep-related molecules in the evolution of sleep.

The article offers information on different stages of sleep including Rapid Eye Movement (REM) sleep, delta sleep and dreaming, and lists the harmful effects of sleep deprivation in students.

The article reports on a survey commissioned by Staples Inc. which found that 51% of small business professionals dream about work. An overview of the impact that dreams can have on employment and life in general is presented. Case studies of employees that have had dreams about their work are examined.

The article offers information regarding the sleeping patterns of human beings. It states that normal sleep of humans consists of REM (rapid eye movement) and non-REM sleep with varying depth. It further explains that in REM sleep, brain is very active, and non-REM sleep have different depths like light sleep, true sleep and deep sleep.

Presents a case of a woman who temporarily lost her ability to dream after a stroke. Loss of the patient's ability to dream despite the preservation of periods of rapid eye movement sleep; Association of the inability of patients to distinguish familiar faces or surroundings after stroke; Involvement of the inferior lingual gyrus in the occipital lobes, the brain's visual processing center.

Provides insights into why people sleep. Research focused on the value of sleep and why people sleep; Impact of the discovery of the rapid eye movement (REM); Physiological effect of sleep deprivation; Theory that REM sleep plays a role in brain development.

Discusses research conducted on rats to determine the contents of their dreams during sleep. Report that appears in the January 25, 2001 issue of the journal `Neuron'; How Dr. Matthew Wilson, senior author of the report, suggests that rats dream of mazes; Role that sleep may play in encoding and storing memories; Relationship between animal and human sleep patterns.