Posted in Psychology & Medicine

Security Blanket

In the Peanuts comic strip, the character Linus van Pelt is always seen with his trustworthy security blanket. What is it about a simple blanket that lets certain children feel so safe around it, and why do they become so agitated when it is taken away from them?

Psychologically speaking, the idea of attachment plays a heavy role in the child’s obsession with their security blanket (or any other comfort object, such as a teddy bear).
An infant’s perception of the world is very limited and it cannot understand the concept of “self” until it develops further. In fact, it is theorised that an infant believes that whatever it wishes, the mother (still considered by the infant as “self”) will bring it to it, thus creating an illusion of omnipotence.
When the realisation that there is something other than “me”, the baby becomes frightened. It suddenly understands that the mother and it are not one, but two separate beings. At this point, it loses the sense of omnipotence and realises it is dependent on others, creating a loss of independence.

Losing its independence and a large portion of itself (the mother), the baby becomes confused and anxious, a phenomenon paediatricians call infant’s lament. The baby tries to comfort itself by attaching itself to its first “not-me” possession – such as a blanket or teddy bear, also called a transitional object. This then allows it to be separate from the mother for periods of time. The transitional object is a reminder to the baby that it still has some control over life and some independence, which gives it comfort and allows the baby to sleep better at night (literally).
Thus, the security blanket is aptly named, as it provides the baby with the confidence and security to adapt to the new world, allowing the baby to grow and develop into a social being.

When the baby develops into a child, it develops its own sense of self-confidence so that it can detach from the transitional object. However, some children never detach themselves and the security blanket persists for a longer time. Unfortunately, this is often found socially unacceptable and seen as a sign of weakness.
Interestingly, studies show that these children are often more independent than other children, due to their ability to be less dependent on their parents. The security blanket never criticises or doubts the child’s abilities, therefore gives the child a source of infinite confidence.

Another research by Lucy van Pelt shows that removal of the security blanket from a child results in withdrawal symptoms such as fear, panic, perspiration, glazed eyes and unconsciousness within 50 seconds.

Posted in Science & Nature

From Cell To Birth: Childbirth

The onset of labour signals that the birth of the child is imminent. Strong contractions of the uterus under the influence of oxytocin cause intense pain for the mother. This escalates as oxytocin creates a vicious cycle for more and more powerful contractions. Other signs include a bloody show, where blood and mucus leaks out, and the water breaking, where amniotic fluid bursts out as the membranes rupture.
When the cervix has fully dilated to 10cm wide, the baby is ready to come out, and this is the end of the first stage. It may take over 24 hours for this stage to be over – all the while the mother is in extreme pain as her body transforms for the process.

The second stage concerns the delivery of the baby, and follows a precise series of steps.

  1. The baby, oriented head-down, facing either right or left, leans against the pelvis.
  2. The baby begins to descend, passing through the pelvis.
  3. It flexes its head as it comes through the cervix, turning towards the mother’s back as it does so.
  4. As the head crowns, the baby turns back to its side-facing position so the shoulders can come out.
  5. The rest of the body comes out with the shoulder. Forceps may be used to help.

The passage of such a large head and body is only possible through the massive dilation of the cervix, the stretch of the vagina, and the soft, malleable skull of the baby (a newborn’s head often looks conical and alien-shaped). Quite often, the opening of the vagina is not wide enough, and the opening may be cut open more to ensure it does not rip.

After the baby is safely delivered, the umbilical cord and the placenta are also delivered, thus ending the third stage (afterbirth). The cord is clamped and cut, and the baby is then thoroughly checked to ensure it is healthy and has no developmental issues.

Although in the past childbirth was extremely risky and often led to the death of the mother and/or baby in the process, nowadays protocols and health professionals ensure that both survive the procedure, thus ending the incredible 40-week journey until the birth of a new life. Only after understanding the arduous steps and the risks a mother takes to give birth to her child can one truly appreciate the value of life.

(Full series here: https://jineralknowledge.com/tag/arkrepro/?order=asc)

Posted in Science & Nature

From Cell To Birth: Growth

After implantation, the embryo quickly grows from a ball of cells into what will be a fully-formed baby. However, it first needs a way to feed: the placenta.
It is an organ that actively takes nutrients and oxygen from the mother’s blood, exchanging it for the embryo’s waste products. It is extremely effective in keeping the fetus alive and protects it from infections or the mother’s immune system.
The blood is carried by the umbilical cord, which plugs into the belly button. This cord is the lifeline throughout term, and disrupting the blood supply will lead to permanent brain damage or even death.

In the first 10 weeks, the blastocyst develops into a very primitive disk-like object that shares no resemblance to a person. It keeps growing and differentiating at a rapid rate (almost doubling in size per week) until it forms an embryo that is more familiar, roughly about week 6. Interestingly, a human embryo looks almost identical to embryos of rabbits, chickens, turtles and fish, showing how all animals shared a common ancestor in the course of evolution. At this stage, the embryo has features such as gills, a tail and a fish-like appearance.

After 10 weeks, the embryo has grown to about 5~8cm (almost 10~20 times the size at week 6), and is now called a fetus. It begins to properly grow organs, and resembles a miniature baby with primitive features.
It continues to grow for the next 30 weeks, continuously relying on the mother for nutrition and life support.

Many different factors contribute to premature birth and IUGR (intrauterine growth restriction), which leads to the birth of a small baby. This may result in less developed organs (especially the lungs) and may affect the health of the newborn throughout its life. There are also many poisons known to harm the development of the embryo/fetus, such as alcohol, nicotine, cocaine, heroin and much more. These should be avoided from a few weeks before conception onwards (even after birth while breastfeeding).

By about 38 weeks, the lungs (the last organs to fully mature) are ready and the fetus is upside down. It is ready to leave the womb, and thus sends a signal to the mother, known as labour. This is when the arduous process of childbirth begins.

(Full series here: https://jineralknowledge.com/tag/arkrepro/?order=asc)

Posted in Science & Nature

From Cell To Birth: Implantation

When an egg is fertilised by the sperm, it is called a zygote. This zygote immediately starts to divide at an exponential rate, to achieve the feat of transforming from a single cell to a 3kg baby. The division and growth happens as the zygote slowly drifts towards the uterus, where it can secure itself.

30 hours after fertilisation, the zygote is now 2 cells.
72 hours, the zygote is now 16 cells.
96 hours, the zygote is now a ball of over 60 cells, and now called a morula.
108 hours, the morula has a cavity inside, and is called a blastocyst.
The blastocyst, essentially a shell of cells with a mass of cells at one point, hatches out of the zona pellucida as it is now much bigger.
To gain the massive amount of energy required for development, the zygote eats up simple sugars in the fallopian tube during its travel.

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As mentioned before, when pregnancy does not happen, the endometrium is shed and flushed out. To prevent this, the blastocyst secretes something called βhCG, keeping the corpus luteum alive, which secretes progesterone to maintain the endometrium. As the endometrium is the fertile “soil” where the embryo will grow, this is a vital step (βhCG is the hormone tested in a pregnancy test).
When the blastocyst reaches the uterus, it finds a safe spot on the endometrium, with the inner cell mass facing the wall. This is where implantation begins.

After clinging tightly to the endometrial cells, the blastocyst fuses some of its cells into a digging tool that can eat away at the endometrium. As it digests away the cells, the blastocyst slowly burrows in until it is completely embedded inside. Cells invade the hollowed space, firmly securing the blastocyst while destroying blood vessels and glands to release nutrients, securing a supply line. Now, it can start its rapid development into an embryo as it leeches away the mother’s nutrients.

A foreign body latching on to the host’s cells, digesting away tissue and leeching blood and nutrients – an embryo acts exactly like a parasite, to ensure that it can safely survive the 40-week gestation. In fact, an embryo can implant itself almost anywhere in the body, such as the fallopian tubes, ovaries or even the gut, as long as there is a secure blood supply. This is called an ectopic pregnancy, and can be an extremely dangerous scenario to both the mother and developing fetus.

(Full series here: https://jineralknowledge.com/tag/arkrepro/?order=asc)

Posted in Science & Nature

From Cell To Birth: Fertilisation

Once the sperm enters the vagina, the real battle begins. The vagina is highly acidic, an environment in which sperm can only survive 2~3 hours. It is crucial for the sperm to enter the uterus through the cervix, but only 1% of the 200~300 million sperm make it through.

Even within the uterus, they must brace harsh conditions as they travel against gravity. After about 5 hours of intense swimming, the sperm reach the top of the uterus. Here they face a choice: go left or go right. Half the sperm make the wrong choice and head down the eggless fallopian tube and ultimately die. The rest navigate their way through the maze of folds in the fallopian tube, often getting lost or sticking to the wall thinking that it is an egg.

About 200 sperm finally make it to the egg, which sits in the ampulla of the fallopian tube. But as always, there is competition even at this final moment. Only one sperm can win the race, and the fastest one will ultimately produce a new life.

When the first sperm touches the egg, a series of chemical reactions occur, essentially “priming” the sperm. This causes it to start the acrosome reaction, where it releases a hoard of enzymes from its head, digesting away the covering shell (zona pellucida) of the egg. It then becomes supercharged, using all of its energy to drive itself inwards until it reaches the oocyte within. As soon as this happens, the tail breaks off, and one final chemical reaction as the calcium level spikes occurs to release more enzymes that prevent the acrosome reaction in other sperm. It also solidifies the zona, forming an impenetrable shield to prevent other sperm coming in (polyspermy can lead to a failed pregnancy).

The calcium spike that causes the above cortical reaction also triggers the egg to divide, so that it reaches the most mature stage. The winning sperm can then combine its nucleus with the oocyte, forming the 46 chromosomes that will set the genetic basis of the new zygote (first stage of a baby).

To reach the egg, the sperm must travel over 20cm – beating its tail over 20,000 times. The probability that a certain sperm will fertilise the egg is 1 in 500,000,000.
Life starts under a near-zero probability condition.


(Full series here: https://jineralknowledge.com/tag/arkrepro/?order=asc)

Posted in Psychology & Medicine

Gaze

A gaze is defined as “to look fixedly, intently, or deliberately at something”, but its true meaning is far deeper than that. In art and psychology, the “gaze” is described as a complex medium of communication between the subject and the object being gazed at. There are many theories as to what the gaze signifies.

A popular explanation is the exertion of dominance by the subject by gazing at an object. In essence, this act objectifies something, such as a painting or a person, placing it on an inferior level relative to the observer. This applies to the concept of the “medical gaze” – where the doctor can see the patient as just an anatomical body, or a holistic being with a soul – or the “male gaze”, which feminists claim to be the tendency for films to objectify women and play to the male audience, providing them with the power and dominance. In this case, the gaze acts as a projection of the viewer, placing himself as a dominant figure indirectly interacting with the female being gazed at in the movie. Although the male gaze itself is questionable, there is no doubt that people tend to project themselves into the characters in a movie through gaze.
This theory explains the uncanny feeling brought on by a gaze, as it gives the impression that you are being defined by someone’s gaze, whilst becoming dominated.

The gaze plays a vital role in the development of babies as they pass through what is called the “mirror stage”. This is when babies first conceive the idea of self, as they see an external image of themselves in the mirror. At this point, the baby’s gaze defines the external image (reflection) while the reflection’s gaze gives the baby an uncanny feeling of “self”.
The concept of the gaze has been well-known throughout history, and is reflected in myths such as the evil eye (that brings bad fortune to those being gazed at) or Medusa (the gorgon who petrifies those who make eye contact with her). Interestingly, the story of Narcissus shows the danger of gaze by misidentifying “self”.

Artists use this concept of gaze effectively by either letting the audience simply gaze at the picture, essentially letting it be defined only when being looked at, or invite the audience in a “conversation” with the painting. This can be achieved when characters in the painting are gazing at the audience, giving the illusion that they can actually see past the two-dimensional plane, gazing into the viewer’s eyes. This produces a strange feeling, while also giving the viewer a heightened appreciation for the painting as he/she feels at level with the painting. 
Furthermore, as the gaze is a two-way conversation, there are also examples of “setting oneself at gaze”. This means that they are exposing themselves to be gazed at, a common example being nude art. Of course, this ties into voyeurism and scopophilia, showing just how complex the meaning behind the word “gaze” can be.

Posted in Psychology & Medicine

Babinski Reflex

Normally when you tickle or stroke the sole of your feet, the toes flex inwards. However, when a newborn’s feet are tickled or stroked, the toes spread outwards. This is known as the Babinski reflex, or Babinski sign. It is a primitive reflex that disappears before 12 months of age.
If this reflex is seen after that, including adults, it is a sign there is something wrong with the nervous system, especially the brainstem or the spinal cord.

A primitive reflex is one shown by newborns but disappears gradually as they develop. These include reflexes such as the walking reflex, swimming reflex and crawling reflex that shows actions that they have not yet learnt, or the rooting reflex and sucking reflex that ensures the baby’s survival.

Posted in Psychology & Medicine

The Two Faces Of A Baby

A baby appears to have a pure and innocent image, but they also have a side we don’t know about.

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Firstly, babies (including infants) know how to lie and steal.
They fake crying to fool an adult, and put on an innocent face on purpose.
During times when they are strongly possessive, they grab what they want and not let go. An adult pities that the baby does not know better and gives it what it wants, but this is actually meticulously planned by the baby.

Furthermore, research has shown that babies show racism and judge people based on looks. Babies, in almost all cases, prefer to be held by the prettier woman. Also, they can perfectly recognise and differentiate faces yet cannot tell the differences in faces from another ethnicity.

Lastly, babies experience euphoria and pleasure through self-harm (banging their heads against a wall produces a similar effect to taking drugs) and can murder their twin inside the womb by (stealing nutrients).

Posted in Psychology & Medicine

Stranger Danger

Babies first show “stranger anxiety” at between 8 to 10 months of age. As their brains develop rapidly, they also learn social-emotional skills and recognise the identity of “parents”. Thus, they do not trust any other adults that are not “parents”. This phenomenon usually disappears after two years, but they then receive education from adults that they should not trust strangers, or Stranger Danger.
Interestingly, most kidnapping cases are committed by an adult the child knows well.

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Another fact related to stranger anxiety is that it is dependent on how close the baby is to its parents. Take the Strange Situation Test developed by Ainsworth as an example:

Put a baby under the age of 12 months and its parent in the same room, then separate the two. Next, send in an adult the baby has never seen before, then after a short while exchange the adult back with the parent.

Normal babies become anxious and agitated when a stranger enters the room, but then they calm down almost immediately as the parent returns. Also, when the parent returns the baby requests to be held, as physical contact represents safety for a baby.
However, a baby that has spent less time with its parents, or a baby with unresponsive parents exhibit a different behaviour. In fact, they become more agitated when the parent returns, and often show avoidance. This is because there has been insufficient bonding between the two.
A more extreme case is of a baby that has been abused. These babies become extremely disorganised and disoriented upon the parent’s return. This is also due to improper socio-emotional development. Babies like these that were not intimately bonded with their parents tend to have trust issues even after development, which may lead to social problems in adulthood.