Day: April 26, 2023

  • Mechanical Keyboards and the Psychology of ASMR

    Mechanical Keyboards and the Psychology of ASMR

    What are your hobbies? Do you participate in a sport, or do yoga, or grab a paintbrush and make some art? How about something that literally sounds amazing – mechanical keyboards, anyone?

    An image showing muliple mechanical keyboards in different sizes, colors, etc.

    You’ll have to trust me, psychology will be incorporated soon, but first – for those unaware of the magic of mechanical keyboards – let me explain my newest hobby, pictured above,  adapted from one of my presentations. Throughout the slides, you’ll see slides I used for the presentation to allow you to experience it as well!

    To start, you are likely using what is known as a “membrane” keyboard. A membrane keyboard, such as those on laptops or the keyboards you’ll see waiting at the computers in a library, use linked pressure pads that result in the key press to allow you to type. A mechanical keyboard utilizes switches, which are connected to a printed circuit board (PCB) that allow the key press to be registered and result in the typed character. There are thousands of switches, each that provide unique sensory responses, sound characterizations, and aesthetic options. Soon, we’ll delve into the intricate engineering of this important aspect of the mechanical keyboard.

    Focusing on the mechanical keyboard, though there are many modifications and options to add, there are a few basics to create the mechanical keyboard. The keyboard encases a printed circuit board, a plate to mount the switches upon, and typically some foam to help dampen the sounds of the keyboard. With these layers, the switches and stabilizers (used for longer keys, such as the space-bar and shift keys) connect to the PCB, and then are topped with key caps. The top case is put on, plug in the cable, and if all goes well, you have a working mechanical keyboard!

    Given how defining the switches are, it is important to discuss their general anatomy as well. The keyboard switches are made of 6 main parts, with small changes that can be made to create a customizable experience.

    Most commonly, you’ll see switches in three main categories: linear, tactile, and clicky. The differences between these three are mostly noise levels and the smoothness of the switch. The stem of the switch largely affects this as the switches stem can be made to a certain actuation and travel distance, affecting how much force is needed to complete a key press and how quickly the key press can happen. This not only affects the feeling of smoothness or lack thereof, but is often an important aspect for those in eSports or the gaming community due to the need for lightning fast responses. For this group, linear switches tend to be the most ideal to use.

    So, why do people want to make or buy these mechanical keyboards? The customization may be nice, but this can be quite the expensive hobby. According to Switch and Click, a popular website and YouTube channel centered on mechanical keyboards), “the average cost comes out to be around $200 – 600 per board,” [5]. And yet, despite how expensive this can be and how silly it may sound to have multiple keyboards, it is quite common for people in this hobby to build multiple anyway. With this in mind, I generally split the reasoning of why into two main categories: subjective and technical.

    Slide on the Benefits of Mechanical Keyboards

    The community aspect in the mechanical keyboard sphere is unbelievable. With the amount of trial and error that may come with building a personalized keyboard, there are plenty of people that want to help others and share what they have created. In fact, even here at Georgia Tech we have a student-run Mechanical Keyboard Club for people to share their builds and enjoy the hobby together! I have no doubt that the expensive aspect actually brings about more community, as people search for such a wide variety of builds to get an idea of what they enjoy the most in terms of sound and looks before shelling out some Benjamins for their ideal keyboard. The previously mentioned Switch and Click YouTube, as of late April 2023, supports 701K subscribers, which has increased about 15K subscribers since I last checked almost two months ago. The community is huge, and only continues to grow as it reaches more people.

    So, how do people typically first find the mechanical keyboard community? The ‘First Contact’ is not necessarily through someone you know showing off their keyboard. In fact, I think one of the most common ways to venture into the hobby is first by seeing Keyboard ASMR. For those that enjoy or who have never heard of it, I encourage you to watch at least a minute of this 1 hour ASMR video from “The Way ASMR” channel – who may be referred to as an ‘ASMRtist’.

    https://youtu.be/xAVoQx2hUpk

    Now, as I have promised, we delve into the realm of psychology.

    What is ASMR? ASMR stands for Autonomous Sensory Meridian Response. According to Psychology Today, ASMR is “[the] name given to a tingling sensation, typically on the scalp, neck, or back, that some people report feeling in response to certain visual or auditory stimuli,” [3].

    For the reader, I have a question. Have you experienced ASMR? I encourage you to submit your answer in the poll below, and see what others have said!

    https://strawpoll.com/polls/eNg69l8EAnA

    ASMR is a relatively new psychological phenomena, with few peer-reviewed articles on the subject, and even fewer that employ empirical data to analyze. Not to worry, I have dug through all the academic tunnels to find a few for this article. From a psychological perspective, many psychologists and researchers may be curious to answer questions on ASMR, such as: ‘is this a common experience?’, ‘how do we define ASMR?’, ‘who is helped by ASMR content the most?’.

    In one article, from authors Dr. Barratt and Dr. Davis, I have outlined their goals and methods on their research of the ASMR experience.

    IMPORTANT NOTE: This study discusses ASMR, occasionally in the context of mental health issues such as depression, and chronic illness. The analysis or results of this study is not meant to provide any diagnosis, cure, or medical advice, and is only meant to identify any patterns or gather data on perceived helpfulness from study participants. If you or anyone else you know is struggling with chronic pain or mental health issues, please reach out to licensed professionals for help in coping and health management.

    The methods employed in this study aim to yield a mix of both qualitative and quantitative results. Additionally, the study wanted to draw comparisons with other sensory disorders and states such as synesthesia and a ‘flow’ state – which you may have experienced while studying. Small spoiler alert, there wasn’t a strong connection of ASMR with either synesthesia experiences nor the flow state, indicating that ASMR is its own psycho-neurological experience.

    Ultimately, ASMR is something comforting and relaxing to watch and listen to for those that experience the sensations associated with ASMR. People enjoying the customization of their keyboard may find satisfaction in their work and the ability to almost create their own ASMR by utilizing the keyboard they have made. Though we understand that ASMR can be as a temporary way to boost mood and relaxation, especially those experiencing depression, more research is needed to fully understand how ASMR works in individuals. Without a significant connection to other known sensory disorders, other than effects of mindfulness, the neural underpinnings of ASMR and the extent of the selection of people that can experience ASMR are still a mystery.

     

    Citations:

    [1] Keyboard University, url:  https://www.keyboard.university/100-courses/intro-to-mechanical-keyboards-p6brj

    [2] Barratt EL, Davis NJ. 2015. Autonomous Sensory Meridian Response (ASMR): a flow-like mental state. PeerJ3:e851. https://doi.org/10.7717/peerj.851

    [3] Psychology Today, url: https://www.psychologytoday.com/us/basics/asmr

    [4] Stephen D. Smith, Beverly Katherine Fredbord & Jennifer Kornelsen (2017). An examination of the default mode network in individuals with autonomous sensory meridian response (ASMR), Social Neuroscience, 12:4, 361-365, DOI: 10.1080/17470919.2016.1188851

    [5] Switch and Click. Article. Url: https://switchandclick.com/what-is-the-average-cost-for-a-custom-mechanical-keyboard/

    [6] The Way ASMR. “Cozy ASMR Typing for 1 HOUR / No Talking / Mechanical Keyboard Sounds / Gateron Red Switches”. Online Video (YouTube). Url: https://www.youtube.com/watch?v=xAVoQx2hUpk

    [7] kane#6661. Image from Discord. ‘mechanical keyboard display station example’.

    [8] Image of Membrane Keyboard. Url: https://www.bestbuy.com/site/best-buy-essentials-be-pkrfkb-full-size-wireless-membrane-switch-keyboard-black/6460659.p?skuId=6460659

    [9] Ultimate Guide to Mechanical Keyboard Switches for 2020, Dygma, url: https://dygma.com/blogs/stories/the-ultimate-guide-to-mechanical-keyboard-switches-for-2020

     

  • The Science Behind Dyeing My Hair (with cool pics!)

    The Science Behind Dyeing My Hair (with cool pics!)

    Ten years ago, if you told me that I was going to dye my hair red when I was 21 years old, I would have told you that you were absolutely lying! I would never (according to 11-year-old me). But according to 22 year old me, yes — I absolutely did dye my hair red, and it’s here to stay for the next few years because I absolutely love it!

    The first time I dyed my hair, it was in the Fall of 2022. I wanted a big change (for personal reasons I will not delve into), but I wanted to do something I never did before. Something that will make me feel new. It did not come for cheap, however. It was worth it nonetheless. This lovely thing I’m talking about is hair dyeing!!

    So, what exactly goes behind hair dyeing? It all boils down to chemistry! The process is different depending on the type of hair dye you get: temporary/semi-permanent, demi-permanent, and permanent. Since I decided to get permanent red hair dye, I will discuss about the permanent hair dye process. Permanent color is what is needed for a more significant hair color change (i.e. from black to red or blond).

    Your natural hair color depends on the quantities and ratios of 2 main proteins: phaeomelanin and eumelanin. Eumelanin causes hair to be brown or black while phaeomelanin causes hair to be blond and red shades. My hair is jet black, so that means my hair is mostly composed of eumelanin.

    My natural hair color –> jet black.

    Both ammonia and hydrogen peroxide are used. Ammonia and peroxide act to lighten the hair’s natural color to form a new base color that will allow the permanent hair dye to stay.

    The cuticle, or outer layer, or the hair strand must be opened before permanent hair color can be applied into the hair. Once the cuticle is open, the dye reacts with the cortex of the hair to deposit or remove color. The cortex is the part of the hair that is the middle layer of the hair shaft which provides the strength, color and texture of a hair strand. There is usually a two-step process for permanent hair coloring: first to remove the original color of the hair, and then the second to apply a new color. 

    The anatomy of a hair strand.

    The alkaline chemical of ammonia is used to open the cuticle to allow the hair color to enter the cortex of the hair. Additionally, it is a catalyst when the permanent hair color combines with the peroxide. Hydrogen peroxide is used as an oxidizing agent, or a developer to remove pre-existing color (it removes the melanin in the hair). Peroxide breaks chemical bonds in the hair, which releases sulfur. This is why there is such a strong odor when dying hair. As the melanin is removed from the hair, the new permanent color is bonded to the cortex of the hair. 

    The result of hydrogen peroxide on my hair (to lighten it)!

    And voila! The hair dresser then washes your hair and styles it. I opted for a haircut and a blowout hairstyle. Shoutout to my talented hairdresser Christi at Cherry Blossom Salon! 

    Finished product!! I’m still so in love

    Have you ever wondered what dyed hair vs non-dyed hair looks like under a microscope?

    Well look no further! With the help of Dr. Leavey, a classmate and I were able to look under the microscope of the molecules of our hair. The picture on the left is mine (red dyed hair) and the one on the right is my peer Claire’s hair (undyed black hair). As you can see, my hair cuticle and cortex are much more jagged and rough, compared to Claire’s smooth strand. This is a result of the chemical reactions that occurred to my hair – the ammonia and peroxide chemically and physically damaged my hair to allow the red color to deposit into my strands.

    My red dyed hair.
    Claire’s undyed black hair.

     

    What is wild is that my dyed hair is essentially permanently damaged. I will have to grow out my original black hair if I want to revert back to my undamaged hair. For now, I think I will stick with damaged dyed hair! 🙂

     

     

     

     


    Sources:

    Anne Marie Helmenstine, P. D. (2019, July 14). The science behind how hair coloring works. ThoughtCo. Retrieved April 26, 2023, from https://www.thoughtco.com/salon-hair-color-chemistry-602183

    Brain, M. (2023, March 8). How hair coloring works. HowStuffWorks Science. Retrieved April 26, 2023, from https://science.howstuffworks.com/innovation/everyday-innovations/hair-coloring3.htm