Buzz
In a 2005 Gallup survey, 37% of Americans reported believing in haunted houses, and a 2013 HuffPost/YouGov study showed that 45% believe in ghosts. While these statistics might be startling, the next time you hear a strange noise, don't rush to call Ghostbusters—seek out a scientist instead. Every spooky sound, poltergeist, or floating apparition has a scientific explanation.
10. Brain Stimulation via Electrical Impulses
People across the globe have reported sightings of shadowy figures known as 'shadow people.' These dark entities are often noticed from the corner of the eye and disappear when looked at directly. Some believe they are demons, others think they may be astral projections, while some suspect they could be time travelers. But there's a more surprising explanation offered by some researchers.
When Swiss scientists electrically stimulated the brain of an epileptic patient, things took a spooky turn. The patient reported seeing a shadow figure sitting behind her, mimicking her every movement. When she sat up, the shadow did the same. When she leaned forward and grabbed her knees, the shadow reached around her and held her. The doctors then asked her to read a card, but the shadow tried to take it from her hand.
What occurred was the stimulation of the left temporoparietal junction, the part of the brain that defines the concept of self. By interfering with this area, which helps us distinguish ourselves from others, the doctors disrupted the brain’s ability to process its own body, thus creating the illusion of a copycat shadow. Researchers believe this could be the key to understanding why so many individuals, both schizophrenic and healthy, encounter shadow beings and other phenomena like aliens.
9. The Ideomotor Effect
The Spiritualist movement gained significant popularity in the 1840s and 1850s, offering a means for people to communicate with their deceased loved ones. One of the methods used was the Ouija board. Still in use today, this board featured letters, numbers, and simple words like “yes” or “no.” Participants would place their hands on a wooden piece called a planchette and ask the spirits a question. The ghost would then move the planchette from letter to letter, spelling out a response—or even unleashing entities like Captain Howdy.
A spine-chilling technique for communicating with spirits was table tilting. During a séance, people would gather around a table, placing their hands on its surface. To their amazement, the table would begin to move on its own. It might tilt onto one leg, levitate off the ground, or glide around the room.
While some of these incidents certainly involved tricksters, were all of them fraudulent? The esteemed physicist Michael Faraday set out to investigate. Through his experiments, Faraday discovered that the movement of the tables was often a result of the ideomotor effect. This is when the power of suggestion causes our muscles to move unconsciously. People expected the table to move, and as a result, they unwittingly made it move. A similar experiment took place in 1853 when four doctors conducted a controlled séance. When they secretly told half of the participants that the table would move right and the other half that it would move left, the table remained still. But when they told everyone it would move in one direction, the ideomotor effect took over! This same principle applies to the Ouija board—it's not the spirits, but our own muscles making the movements.
8. Infrasound
After seeing a gray ghost near his desk, researcher Vic Tandy began to worry that his laboratory was haunted. The next day, however, Tandy made a surprising discovery. While preparing for a fencing match, he placed his sword in a vise and noticed it vibrating on its own. Suddenly, everything fell into place. He realized the force causing the sword to shake was the same force he had attributed to a haunting in his lab. Vic Tandy had encountered infrasound.
Humans are capable of hearing sounds up to 20,000 Hertz, but anything below 20 Hz remains undetectable to us. These low-frequency sounds, called infrasound, can’t be heard but are felt through vibrations. Dr. Richard Wiseman notes that we especially feel these waves in our stomachs, which can trigger either positive emotions (such as awe) or negative ones (like unease). In certain settings, such as a 'haunted house,' these vibrations can even induce a sense of panic.
Infrasound can be created by a variety of sources, including storms, wind, weather patterns, and even common appliances. Returning to Vic Tandy, after observing his sword tremble, he found that a new fan had been installed in his laboratory. Upon investigation, he discovered that the fan emitted vibrations at approximately 19 Hz. Because our eyes resonate around 20 Hz, the infrasound caused vibrations in Tandy's eyeballs, generating hallucinated images. When the fan was turned off, the ghostly vision disappeared.
Dr. Wiseman also suggests that these infrasound vibrations might be behind many paranormal events reported in 'haunted' places. For example, while studying two underground sites, he discovered signs of infrasound originating from traffic above. Wiseman believes this explains the apparition sightings and eerie footsteps heard in these areas, showing just how unsettling these vibrations can be.
7. Automatism
What’s the common link between witch doctors and Shirley MacLaine? Both are deeply involved in the practice of channeling! Channeling is one of humanity's oldest methods for reaching the spirit realm. The concept is to clear one’s mind, connect with a universal consciousness, and then allow a centuries-old spirit to take control of your body, which sounds perfectly normal, right? Shamans from ancient cultures were believed to channel the dead, while TV psychic John Edward claims he communicates with ‘those who’ve crossed over,’ and medium J.Z. Knight channels Ramtha, a 35,000-year-old spirit from Atlantis. Of course, the channeling community has its fair share of frauds, but what about those who genuinely believe in what they’re doing?
The answer lies in automatism, a state of consciousness where people speak and think things without awareness. When a psychic clears their mind, they often look for a spirit guide. Supposedly, this guide enters their body and imparts hidden knowledge about the universe. However, when the psychic’s mind is clear, random thoughts and images start surfacing. The medium assumes these ideas are from the spirit, but in reality, they’re just products of their own mind. Our brains are capable of conjuring up bizarre ideas effortlessly. How often have you had sudden inspirations or vivid, strange dreams? That’s not the work of a spirit guide; that’s your brain at work.
6. Drafts
Picture yourself exploring a creepy, decaying mansion late at night when suddenly the air turns frigid. But as you move a few steps to the left or right, the temperature returns to normal. This phenomenon is called a cold spot by parapsychologists. Ghost hunters claim that cold spots are a sign of paranormal activity. They believe that when a ghost manifests, it draws energy from its surroundings (including people) to appear, causing the temperature in the area to drop dramatically.
However, scientists offer a much more straightforward (and admittedly less thrilling) explanation. When skeptics examine 'haunted' houses, they typically find that cool air is entering the space through openings such as a chimney or window. Even if a room is sealed, there’s still a rational reason behind it. Every object has its own temperature, with some surfaces being warmer than others. To balance the temperature within the room, objects lose heat through a process called convection, where warm air rises and cool air sinks. Similarly, when dry air enters a room with high humidity, the dry air sinks, and the humid air rises. This movement of air creates a cool sensation on the skin, which can give the illusion of a cold spot. So, the next time you feel a ghostly presence, simply turn on the heater.
5. Camera Problems
Ghost hunters have a complicated relationship with orbs. These glowing spheres of light are thought to be the spirits of those who have passed but haven’t fully moved on. Invisible to the naked eye, orbs only appear in photographs, and that’s where the confusion begins. Skeptic Brian Dunning explains that when a speck of dust or an insect is too close to the camera lens, it will appear in the photo as a blurry, out-of-focus circle. With the flash from the camera, the orb appears to glow, leading to its misinterpretation as a ghost. It’s an understandable mix-up, right?
Even many paranormal believers are somewhat skeptical about orb photos. While some think a few genuine orb images exist, parapsychologist Pamela Heath points out several natural causes for orbs, including fine hairs, dirty or wet lenses, lens reflections, or movement during exposure. Many paranormal websites have stopped accepting these photos, citing the overwhelming number of false ones. Thanks to a basic understanding of photography and technology, it seems that orb photos are finally losing their ghostly appeal.
4. Carbon Monoxide Poisoning
In 1921, ophthalmologist William Wilmer published a strange article in the *American Journal of Ophthalmology*. It recounted the terrifying experiences of the “H” family and their haunted house. Their home was filled with unsettling sounds, like doors slamming, furniture moving, and footsteps echoing in empty rooms. One child reported a feeling of something sitting on them, while another claimed to have been attacked by an unseen stranger. One night, the woman of the house woke to find a man and a woman standing at the foot of her bed, only to watch them disappear moments later. As the hauntings grew worse, the family became exhausted and depressed, and their plants began to wither. Eventually, they discovered a faulty furnace. The furnace, instead of venting its fumes up the chimney, was releasing them into the house. The family was suffering from carbon monoxide poisoning.
Carbon monoxide (CO) is a colorless, odorless gas, which makes it extremely difficult to detect. It is dangerous because our red blood cells absorb CO far more easily than oxygen, leading to oxygen deprivation. This results in symptoms like weakness, nausea, confusion, and in extreme cases, death. But before reaching that point, you may experience hallucinations, much like the “H” family. In 2005, a woman contacted authorities after seeing a ghostly figure in her bathroom. The so-called paranormal activity turned out to be caused by a leaking water heater that was filling the house with CO. The lesson here: avoid carbon monoxide at all costs, because whether it's in your home or in your mind, it can make you see things.
3. Quantum Mechanics
Quantum mechanics explores the tiniest components of matter and has led to groundbreaking inventions. However, things can take a strange turn when scientists start connecting it to souls and spirits. Consider the theory proposed by Dr. Stuart Hameroff and his colleague Roger Penrose. They believe that human consciousness originates from the microtubules within our brain cells, which are involved in quantum processing – essentially our souls. According to Hameroff and Penrose, when people experience near-death episodes, the quantum information stored in the brain may leave, but continues to exist. This could explain why some individuals report out-of-body experiences or perceive lights at the end of a tunnel.
As you might imagine, many scientists are skeptical of Hameroff and Penrose’s theory. However, Dr. Henry Stapp, a distinguished quantum physicist who collaborated with the famous Heisenberg, is not one of them. Stapp proposes that a person’s personality might be able to persist after death as a “mental entity.” He speculates that if these entities can return to the physical world, phenomena like possession and channeling could indeed be real. So, are thinkers like Stapp, Hameroff, and Penrose simply indulging in wishful thinking, or are they the modern-day equivalents of Galileo?
2. Ions
Unfortunately, real ghost hunters don’t carry proton packs. However, they do rely on tools like the ion counter, which measures the presence of ions. An ion is simply an atom that has an unequal number of protons and electrons. When an atom gains an electron, it becomes a negative ion, and when it loses an electron, it becomes positive.
Ghost hunters are particularly obsessed with ions, as they believe these fluctuations indicate paranormal activity. Some argue that a ghost's presence disrupts the normal ion balance in the environment, while others think that spirits draw on ionic energy to manifest and frighten people. However, ion counters aren’t all that reliable for detecting ghosts. Ions can be generated by a variety of natural causes, such as weather patterns, solar radiation, and radon gas. In the end, it all comes down to interpretation: scientists attribute ions to natural phenomena, while ghost hunters see them as a sign of the supernatural.
Interestingly, both positive and negative ions can influence our emotions. Negative ions tend to have a calming effect, while positive ions can cause headaches and make us feel unwell. This might help explain why people who live in “haunted” houses often report feeling fatigued, anxious, and suffering from headaches.
1. Mass Hysteria
In June 2013, over 3,000 workers at a garment factory in Gazipur, Bangladesh, went on strike, but not because of wages or long hours. Their protest had nothing to do with working conditions—what they wanted was action against a ghost haunting the restroom. After a worker claimed to have been attacked by an angry spirit, panic spread like wildfire. The workers rioted, and the police had to step in to restore order. A similar incident occurred in Patong, Phuket, where 22 students ended up in the hospital after reportedly seeing the ghost of an old woman. While the factory owner opted for an exorcism, perhaps a counselor would have been a better choice.
Both the factory workers and the students were victims of mass hysteria, a psychological phenomenon that often arises in stressful environments, like a strict school or a demanding workplace. When stress builds up, it can manifest in physical symptoms such as headaches, nausea, or even spasms. Combine this with cultural and religious beliefs, isolation, and the spread of rumors, and it creates the perfect storm for mass panic. As the symptoms spread, more people ‘catch’ them, causing a chain reaction of fear.
Interestingly, very few of the 3,000 factory workers actually saw the ghost. The woman who started the whole ordeal didn’t see anything at all—she simply became ill and assumed it was the work of an evil spirit. But the suggestion was so powerful and the conditions so ripe for panic that everyone else jumped to the same conclusion. Thankfully, no one ended up sacrificing humans or witnessing chaos akin to ‘dogs and cats living together.’
