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A little memory fun fact: There are about 1 billion neurons that make up the human brain. All those neurons combine to make over 1 trillion neuronal connections. This allows the brain to store about 1 million gigabytes worth of memories, an amount no human can use up in a lifetime or even two.

1. Speed boat
   Pontoon boat
2. Sail boat
   Paddle boat

TBI (Traumatic Brain Injury) damage can go unnoticed for years as it builds up until symptoms become obvious. The damage can cause accelerated neurodegeneration and memory loss as well as increase a person's chance of developing Alzheimer's. It's unknown why the brain's axons continue to degenerate up to decades after the original injury. Axon degeneration can lead to the development of Alzheimer's-like sticky protein buildup and dementia.

1. 5
   2
2. 8
   12

In a study of 178 people, researchers found that closing one's eyes can help improve memory recall by 23 percent. Removing visual stimuli frees up more brain power that can then be spent on memory processes, which allows for improved recall.

1. Red
   Black
2. The dog is one solid color
   White

The hippocampus is located in the brain's temporal lobe, and it's in charge of specific memory processes. It helps in the formation and storage of memories, and it also allows memories to be sorted.

1. Top right
   Bottom left
2. Bottom right
   Top left

Nischal Narayanam set the world record for being able to remember the most number of digits in the least amount of time. He was able to recall an unbelievable 132 digits after looking at and memorizing them for just one minute.

1. Green
   Pinkish/purplish
2. Brown
   Yellow

If you ever start feeling emotional while recalling certain memories, it's because of the hormone cortisol. Cortisol assists in the recollection of emotions you've felt in the past. The body also releases cortisol in response to stress.

1. A young boy
   A dad and his son
2. A teen girl
   A mom

Think dreams are pointless? Think again. Recent research shows that dreaming helps improve long-term memory as well as facilitates connections between new memories and old ones.

1. Rainy
   Snowy
2. Sunny
   Cloudy

The attention span of an average adult is just 20 minutes, while children's attention spans usually are equivalent in minutes to their age (9 years = 9 minutes). If an adult is actually interested in the topic, the attention span can increase.

1. Sandy
   Pink
2. Blue
   Green

The feeling of familiarity you get before actually recalling the specific memory associated with it is triggered by the medial temporal cortex. The process of remembering takes place in the prefrontal cortex and hippocampus.

1. On the right side of the horizon
   In the center of the horizon
2. On the left side of the horizon
   On the bottom of the screenshot

Damage to the frontal and temporal regions of the brain can lead to chronic feelings of deja vu, which is when someone feels as though a new experience is exactly like one they remember to have already experienced, but didn't. Almost like predicting the future as it's happening, but it's just your brain remembering incorrectly and going all haywire.

1. A young woman
   A young man
2. An elderly man
   A little boy

"SuperAgers" are adults over the age of 80 who have memories as good as or better than healthy adults in their 50s and 60s. It's believed that one of the most important factors contributing to the memory of SuperAgers is meaningful relationships. Having people to live and remember for is a big part of preserving cognitive functioning.

1. Swimming
   Biking
2. Sailing
   Running

Working memory is a form of short-term memory. Short-term memory describes one's ability to store and readily access small amounts of information for a brief period of time. When it comes to working memory, it has to do with tasks in which you are actively engaged.

1. 2
   No
2. 4
   8

While memory decline is associated with older adulthood, some types of memories​ actually continue to improve, like semantic and procedural memory. Procedural memory has to do with remembering how to do things. Semantic memory has to do with recalling general facts you've learned that aren't tied to a specific experience.

1. I didn't see any cell phones, but I did notice a woman doing some work on her laptop.
   Nope, none.
2. Yes, at least two different people can be seen browsing their phones.
   Sure did! There's a young man sitting on a bench who is using his cellphone.

Typical short-term causes of temporary memory deficits include: infections, anxiety, substance abuse, medication side effects, dehydration, depression, psychological stress, and thyroid imbalances.

1. Yellow
   White
2. Red
   Lime

If you're looking for a quick way to improve your memory, try using mnemonic devices for learning and remembering names and other new information. Another useful and similar way is to identify associations between concepts.

1. Bread
   Crackers
2. Grapes
   Tomato

Episodic memory is the process that allows humans to remember past experiences. It allows us to mentally travel back in time to relive past experiences.

1. A water gun
   A toy car
2. A book
   Food

Over time, humans have the natural tendency to forget facts, experiences, and events. This is called transience, which is actually viewed as a good thing, since it's important for the brain to be able to rid itself of unimportant facts to free up processes for new ones.

1. A water bottle
   Lipstick
2. A purse
   An ice cream cone

When the answer is right at the tip of your tongue but you just can't seem to reach it, that's the phenomenon called blocking. The reason for failed memory recall is usually because another similar memory distracts you from being able to think of the original. Only about half of the time are people able to work out the blocked memory.

1. Black
   Blue
2. White
   Red

Another way to improve memory retention is through exercise. Research shows that if you exercise four hours after learning something new, you retain memory better than someone who exercises immediately after learning or who doesn't exercise at all.

1. Brown
   Light red/pinkish
2. Yellow
   Neon

Certain classes of OTC (over-the-counter) medicines have been linked to declines in executive functioning and memory as well as increased risk for the development of Alzheimer's Disease. The active ingredients in certain allergy, antacid, motion sickness, and sleep pills associated with this risk are diphenhydramine, chlorpheniramine, meclizine, ranitidine, dimenhydrinate, and loperamide.

1. The dog-walker
   The biker
2. The sailor
   The book-reading woman

Additional techniques to aid in jogging your memory include reciting aloud whatever needs memorizing, leaving reminders around, and breaking tasks down for easier digestion and memorization. Another useful method for boosting memory is through socializing. Having a healthy social life helps stimulate your brain, which, in turn, increases memory capacities.

1. A teenage boy
   A young boy
2. A young girl
   A dad

There are many, ways to protect your brain and memory as you age. Eating a healthy diet to control your cholesterol levels is one way. Make sure to avoid smoking and to get enough exercise, even if it's just a brisk walk.

1. Purple
   Green
2. Red
   Light brown

While it's largely held belief that people with amnesia forget who they are, this is simply not the case. The most common manifestation of amnesia results in difficulty forming new short-term and long-term memories and rarely affects past memories.

1. The sailor
   The biker
2. The leftmost ball-thrower
   The runner

Do you struggle with remembering names? Well, Alexander the Great sure didn't. He's remembered for knowing the names of all 30,000 of his soldiers.

1. No.
   3 couples
2. A woman and child
   Two children

Typically, the human memory works best when memories are formed around visual stimuli. The brain has an easier time processing visual information. When studying, it's useful to pair text with visuals to improve the amount of information absorbed.

1. Yes, one couple sitting near the lake.
   Three couples
2. No.
   Three people do.

While going over something again and again may seem like the best method for memorization, it's not. The brain remembers best when it has to work for and retrieve memories rather than have easy quick access.

1. Five people.
   Four people.
2. Everyone seems to have their shoes on.
   Two people

While it may seem like each memory of an experience is stored all together in a specific area of the brain, what actually happens is that aspects of the memory are sifted through and sorted to different parts of the brain. Visual components of the memory go to one place, emotional components to another, smell aspects to another, and so on. Then it's up to the hippocampus to orchestrate all those bits and pieces together to form once cohesive memory upon recall.

1. 17
   11
2. Three
   Seven

Your memories are categorized and prioritized according to emotional intensity. When a memory has intense emotions attached to it, it's prioritized as a more important memory and is more easily and clearly recalled.

1. Three
   Eight
2. 20
   11

For around 20 to 30 seconds at a time, your short-term memory can hold about seven different pieces of information. In the movie "Finding Nemo," the fish, Dory, has short-term memory deficits that lead her to forget most things and behave erratically.

1. Yellow
   Red
2. There isn't a sun;
   Purple

The brain is the ONLY organ that doesn't contain any nerves, which means it lacks the ability to feel pain. Your brain literally cannot hurt, but there are plenty areas of the head that can. Despite this, the brain is the command center for the central nervous system.

1. It ends
   To the houses
2. Around the lake
   It heads right and then off the page.

It's a commonly held misconception that people can only use about 10 percent of their brains at once. Every part of the brain is used for specific functions.

1. Army green
   Brown
2. White
   Blue

The human memory is susceptible to many biases, including, illusion-of-truth effect, source confusion, next-in-line effect, and suggestibility.

1. Two rectangular windows
   One circular window
2. Four circular windows
   One rectangular window

Consuming too much alcohol doesn't technically cause memory loss or make you forget anything. Rather, too much alcohol literally blocks the formation of new memories, so there's technically nothing there to remember or forget.

1. Orange
   Black
2. Blonde
   Blue

Epigenetics has shown that there is such a thing as "generational memory" that influences gene expression in future generations. Meaning, the traumas of our ancestors become our own traumas quite literally through our DNA.

1. There are some flowers.
   Small shrubs/bushes
2. Nope, just the trees.
   The lake has lilies.

The average human brain weights about 3.3 pounds, which is about 2 percent of said human's total body weight. Both gray matter (neurons) and white matter (neuron fibers) make up the brain.

1. It's right on the horizon
   A little more than halfway
2. A bit lower than halfway
   Smack dab in the middle

The cerebral cortex is made up of four lobes: the frontal lobe, the temporal love, the parietal love, and the occipital lobe. This is where complex thought processes take place.

1. Negative
   Sure, all the women.
2. Yes, two women.
   Five women

There are two hemispheres of​ the human brain: the left hemisphere and the right hemisphere. They are connected by the corpus callosum. In individuals with severe, relentless seizure disorders that do not respond to other treatments, the corpus callosum may be severed to prevent electrical signals from bouncing between the hemispheres.

1. Three ribbons
   No ribbons
2. Eight ribbons
   Five ribbons

It's a commonly held belief that memory functions similarly to computers or videos, but in reality, it's much more complicated than that. Memory is unstable, continually being altered by how we interact with it. It's unreliable and limited in scope, especially when it comes to details.

1. Green
   Purple
2. Yellow
   Red

False memories are a real thing, and people are especially susceptible to them when under the influence of hypnosis. Researchers have successfully implanted false memories in about 20 percent to 50 percent of subjects in controlled studies.

1. A sailor sitting atop the main beam
   A large skull and bones flag
2. A small flag
   A bright light

When awake but not actively doing anything, the brain uses up about 20 percent of the body's oxygen resources, even though it makes up just 2 percent of the body's total weight.

1. A park
   A beach
2. A recreational center
   A backyard

Many people turn to dietary supplements in hopes of protecting their brain health and memory, but researchers are saying more and more that this is not the most effective route. Instead, try incorporating key nutrients in your diet. Eating fish rather than taking vitamin E and Omega-3 supplements is believed to be a more effective approach with fewer risks.

1. Sun beams/rays
   Airplane
2. Smoke
   Birds

Simply repeating the same processes over and over again, like cross​word puzzles and soduku, isn't enough to boost your brain power. While many believe engaging in those sorts of mind/memory games help, better methods include: learning something new, mediating, or socializing. This is what sparks new neural connections and keeps the brain sharp.

1. The biking woman
   The running woman
2. The swinging girl
   The dog

Multitasking is not great for memory. It causes us to be distracted rather than focused, which makes it much easier to forget bits of information or simply not notice the details to begin with. Being mindful, rather than a multitasking productivity machine,​ is a great way to boost your brain power and memory.

1. One guy
   Two​ dudes
2. No
   Four men

Sleep is one of the most important players when it comes to memory formation. When sleeping, your brain is able to reflect on the activities of the day, store important info, forget less relevant info, and make connections between the new information and older experiences.

1. The cellphone user
   No one
2. The woman standing next to the man holding a cane
   The woman facing the lake

At four weeks of development, the human fetus brain forms 250,000 new neurons every minute. By 3 years old, toddlers have around 80 percent of their adult brain volume.

1. Bottom left
   Bottom right
2. Top right
   Dead center

The adult brain uses about 25 percent of the body's metabolic energy. Whereas baby brains use about 60 percent of their tiny bodies' metabolic energy.

1. The reader
   The swinger
2. The leftmost ball-thrower
   The biker

Each year, more than 50 million Americans are affected by neurological disorders, costing a whopping $400 billion in medical bills. Outside of substance use disorders, at least 44 million Americans are affected by mental disorders each year.

1. The reader
   No one
2. The sailor
   The kite flyer

At least 250,000 Americans are affected by spinal cord injuries each year, and 4 million deal with Alzheimer's disease. Parkinson's affects at least 1.5 million Americans each year, and M.S. afflicts 350,000.

1. Day
   Dusk
2. Dawn
   Night

Along with sleep, vitamin D is essential to brain health and memory. Vitamin D deficiencies have been shown to accelerate cognitive decline.

1. Four
   One
2. All of them
   Two

If you need a temporary boost, drink some green tea. It's been shown to improve attention span and assist the brain work its way through difficult tasks.