Dialogue in the dark was an interesting experience. First, it starts out feeling constrained and very lost in the beginning corridors. It was mostly because I was infront of the line. Then, I am in a wide space in the park, before entering the boat ride with height feels shorter and I felt lower.
Then to the carpark with I got lost feels slighter wider but is constrained due to the items inside. The road with feels wider again, and then we head over to the marketplace which is a narrow and long space. Chinatown is a complex location and I did not know where we are headed too, then to the wide cafe.
Overall, Dialogue in the Dark was an interesting snippet on feel how it feels like to be a blind person. Without our sense of sight, naturally we would depend on other senses like kinesthetics and smell. For me, I relied on sound to travel around, listening carefully to our guide and the surrounding sounds to find out what kind of location it was. Looking back, it is funny that we can feel the sense of space though we can’t exactly see it. I was not that scared during the walk, and sometimes I wish that the experience can be intensified. For example, if the boat could actually move up and down, mimicking the waves of the river.
We also get to know more about the blind world and the difficulties we would never experience. It is eye opening to see how design plays a big role in aiding the the handicapped, and there are areas which are still developing. Like taking public transport (knowing the number of the buses and which stops is it).
This experience reminded me that we must never take our healthy bodies for granted, and to be much more sensitive to the handicapped community. I appreciate the times where the guide shared more about her personal experiences, which educated me on how to sensitively help these people when I see them in public. Also, it reveals to me the importance and uses of each of our other senses that we underestimate in our daily lives 🙂
Symbiosis describes close interactions between two or more different species. It is different from regular interactions between species, because in a symbiotic relationship, the two species in the relationship live together.
Bird gel and my animal pairing is the oxpecker and zebra!
Just incase you forgot how a zebra looks like hahaa
Zebras are are several species of African equids (horse family) known by their distinctive black and white striped coats. The stripes are unique to each individual and come in different patterns. They are generally social animals that live in small harems to large herds. Interestingly, they also found in a variety of habitats, such as grasslands, savannas, woodlands, thorny scrublands, mountains, and coastal hills. However, we would be only focusing on the African Zebras as the oxpecker is a native species there.
The colours the bird have is interesting, and a sharp contrast between the black and whites of a zebra
Oxpeckers are endemic to the savanna of Sub-Saharan Africa. Both the English and scientific names arise from their habit of perching on large mammals (both wild and domesticated) such as cattle, zebras, impalas, hippopotamuses, or rhinoceroses. They consume ticks, small insects, botfly larvae, and other parasites.
Oxpeckers graze exclusively on the bodies of large mammals, and it is observed that certain species are preferred.
Mutualistic or Parasitic?
The oxpecker and its interactions with the mammals they have a relationship with are the subject of debate and ongoing research.
Mutualistic: A mutualistic relationship is when two organisms of different species “work together,” each benefiting from the relationship.
Oxpeckers land on rhinos or zebras and eat ticks and other parasites that live on their skin. The oxpeckers get food and the beasts get pest control. Also, when there is danger, the oxpeckers fly upward and scream a warning, which helps the symbiont (a name for the other partner in a relationship).
Parasitic: One organism (the parasite) gains, while the other (the host) suffers.
But recent evidence suggests that the oxpecker might be parasites instead, as they open and enhance the wounds on the animal’s back in order to drink the blood of their perches. There is also no statistically significant link has been shown between oxpecker presence and reduced ectoparasite load.
Oxpeckers also feed on the earwax and dandruff of mammals; though beneficial to humans, less is known about the possible benefits of this to the mammal. It is suspected that this is also a parasitic behaviour.
Some oxpecker hosts are intolerant of their presence, as elephants and some antelope will actively dislodge the oxpeckers when they land. Other species tolerate oxpeckers while they search for ticks on the face, which one author says “appears … to be an uncomfortable and invasive process.
Oxpeckers are the only bird in Africa documented to feed on blood!!!!!
I think the ambiguous relationship between the zebra and oxpecker is very interesting, and it would definitely be a part of our model.
2 Key senses for survival
Though it is not part of the 5 senses, a very striking feature of a zebra is its stripped camouflage. Unlike other forms of camouflage, its dazzle camouflage does not hide the zebra. Instead, it breaks up the zebras’ outline and makes it harder for predators to judge distances — throwing off their strikes when hunting.
It is rather difficult to find specific research on the zebra, so I decided to additionally look up on information about horses, which is part of the equid family, which belongs to the same family as zebras as well. It is crucial to take note that the horses’ senses are based on their status as prey animals, where they must be aware of their surroundings at all times.
Zebras have excellent eyesight, having the largest eyes of any land mammal. Like most ungulates (hoofed animals) and equids, the zebras eyes are on the sides giving it an advantage as prey animals. This vision offers a wide, circular view, meaning they can detect stalking animals sneaking up from behind.
65° of a zebra’s view is binocular vision, which mean they can use both eyes together.
How binocular vision works!
285° of an equid view is monocular vision where both eyes are used separately. By using the eyes in this way, as opposed by binocular vision, the field of view is increased, while depth perception is limited.
How horses and zebra sees!
As the binocular vision is directed down their nose and not straight ahead and the horse actually has a blind spot in front of its forehead. When a horse is grazing, his vision is directed at the ground in front of him and his monocular vision will be at work. Should he see something that warrants investigation, the horse will raise his head to bring the binocular vision into force. If the object was spotted in the horse’s side vision, he will turn and raise his head, or even whole body to look.
When a horse is grazing, his vision is directed at the ground in front of him and if he is relaxed, his monocular vision will be at work. Should he see something that warrants investigation, the horse will raise his head to bring the binocular vision into force.
As their depth perception is being compromised due to binocular vision, it makes it more difficult to judge precisely how close the predator is (I imagine that a horse would think that if it can see the predator, then the predator is too close and would be on high alert).
A horse’s hearing is good, and the pinna of each ear can rotate up to 180°, giving the potential for 360° hearing without having to move the head.This unique anatomical feature allows horses to focus on the direction from which the sound is coming, isolate it, and run the other way. Their hearing is 2 – 3 times better than a good hunting dog.
Noise impacts the behavior of horses and certain kinds of noise may contribute to stress: A 2013 study in the UK indicated that stabled horses were calmest in a quiet setting, or if listening to country or classical music. However, they displayed signs of nervousness when listening to jazz or rock music.
2) Range of Motion- skeletal / structural makeup
With four legs, horses can move in even more different ways, called gaits. They naturally walk, trot, canter, and gallop, depending on how fast they need to move. Every gait has a distinctive pattern, with one or more hooves leaving the ground at a time.
Our equines have about 205 bones in their body that provide structure, give rise to joints to allow for movement, and offer protection to vital organs.
A skeletal structure of a horse/zebra:
How a horse trots, notice all the joints
The running of a horse, like all equids, all 4 feet will leave the ground at some point
3) Include diagrams or sketches & videos
I think an interesting and unique thing about zebras is their use of tails, which swats pests away
I was stumped at this project for quite awhile, not quite sure where to start due to a diversity of things we can do. As instructed by Cheryl, I decided to take a look at the structure of our ear to kick start the entire project.
The ear mostly works by vibrations, which is the medium that the sound energy travels through. I decided then to think about what kind of material produces similar vibrations, pushing myself beyond using strings or a drum-like instrument to do so.
Then an idea came up me – why not use an aluminium sheet? I remembered liking the wobbly sound it produces as a kid. Then I looked through Youtube for some inspiration:
The man in the video used the aluminium sheet like a drum, using a variety of materials to hit to create different sounds. I quite like the rubber balls, which is super eerie and extremely unique. I also realised that Foley Artists use aluminium foil to imitate thunder.
These two videos is my main form of inspiration. I observe that the different length of strings create a different pitch. I like how the Marilyn Donadt used the aluminium foil in place of the water that is used in the Aquaharp apparatus.
Then I decided to plan onto what to do. I know that the main function of the wobbly effect is something I want to capture in my model. So the next step is to think of what kind of mechanism would actually allow a large piece of aluminium foil to wobble?
Firstly, I understood that moving the aluminium sheet up and down creates the sound that I had in mind. Similar to handmade prototypes of the aquaharp that I studied, and Marilyn Donadt’s instrument, a hallow pole is needed for the sound of go through. I also incorporated the sticks as I would like my instrument to have a different layers of sound to make it more interesting. This idea – though simple, works! And it also sounds like thunder.
I decided to make a small and very rough prototype to test it out because aluminium sheets are super expensive!!!!!! No budget for screw ups here.
Probably due to the small size of the sheet, the sounds created by the sticks were not so prominent. I was also not satisfied as with the idea was too simple, and the thin metal stripes was similar to my inspiration. Wanting to push myself, I continued to brainstorm on how to make the concept more interesting. The answer that I thought about was springs!
The main change from my second to final product was incorporating more elements like the cotton balls, lights and the box with beans, enabling to recreate the full effect of rain. I am really satisfied with the final product 🙂
– Really find and purchase flickering LED lights, which will be more realistic as the frequency of lightening won’t be as periodic
– Make the top of the box look nicer
– Perhaps add in metal balls with the cotton balls, creating a wider texture of sounds. I personally feel that bells will really suit this model as well, it would be like a rain call before the thunderstorm
This project was super enjoyable for me. The research I have done showed me that sound can be recreated in so many ways, and to be restricted by basic instruments like piano, cello etc is really boxing one’s creativity! It has also pushed me in the sense where I had to use a wider variety of materials and equipment to help me get my final product, such as a drill.
P.s: I am just imagining my church using these kinds of apparatuses for worship instead of normal instruments haha
Sound waves enter the outer ear through the ear canal to the eardrum
The eardrum will vibrate from the incoming sound waves, these vibrations occurs in the middle ear with bones called the malleus, incus, and stapes, which amplifies or increase, the sound vibrations and send them to the inner ear.
The vibrations cause the fluid to form traveling waves along the basilar membrane.
Which moves to the hair cells near the wide end of the snail-shaped cochlea detect higher-pitched sounds, such as an infant crying. Those closer to the center detect lower-pitched sounds, such as a large dog barking.
As the hair cells move up and down, it will bump against an overlying structure and bend. Bending causes pore-like channels, to open up and creates an electrical signal to the brain
Here is a video to explain everything above!
How does human’s feel?
Our sense of touch is controlled by a huge network of nerve endings and touch receptors in the skin known as the somatosensory system. This system is responsible for all sensing cold, heat, smooth, rough, pressure, tickle, itch, pain, vibrations, and more. Within the somatosensory system, there are four main types of receptors:
Mechanoreceptors: Pressure, vibrations, and texture
Thermoreceptors: Found in the dermis layer of the skin, it contains two categories of hot and cold receptors.
(Cold receptors start to perceive cold sensations when the surface of the skin drops below 35° . They are most stimulated when the surface of the skin is at 25 ° and are no longer stimulated when the surface of the skin drops below 25° .)
(Hot receptors start to perceive hot sensations when the surface of the skin rises above 30 ° and are most stimulated at 45 ° beyond this, pain receptors take over to avoid damage being done to the skin and underlying tissues.
Pain receptors: These receptors detect pain or stimuli that can or does cause damage to the skin and other tissues of the body. There are over three million pain receptors throughout the body, found in skin, muscles, bones, blood vessels, and some organs. They can detect pain that is caused by a cut or scrape, or thermal stimuli (burn), or chemical stimuli (poison from an insect sting).
Proprioceptors: It senses the position of the different parts of the body in relation to each other and the surrounding environment. Proprioceptors are found in tendons, muscles, and joint capsules. This location in the body allows these special cells to detect changes in muscle length and muscle tension. Without proprioceptors, we would not be able to do fundamental things such as feeding or playing sports.
What is the similarity between the frog and humans?
Frogs, like humans have tympanum
The tympanum are part of an ear structure – However for the frog, it is located behind its eye and is used to transmit sound waves into the inner ear. Its unique structure also allows protection and to keep it hearing while it is submerged, which is an ability humans lack as we have an outer ear structure.
2. Neuromuscular junctions
Frogs and humans also both have neuromuscular junctions that transmit motor impulses from the nervous system to muscles.
*Interesting fact! Frogs can only detect high-pitched sounds with their ears; low-pitched sounds are detected through the skin.