Thanks to Lucien Dujardin
Faculté de Pharmacie BP 83 F 59006 Lille Cedex France that developed the applet in Java.
Imagine you are studying a system, a primate's basal brain and it's reactions considering
testosterone (T) presence and testosterone action for example. You are
doing experiments. You consider XX and XY brains. You consider testosterone amount and testosterone
You vary T amount and T action (considering more sensitivity or insensitivity to T presence) and explore
how they control the basal brain's answers - the output - that will determine or at least influence gender
Consider the basal brain system would be a black box, as the black square below. Consider all INPUT to the system would happen inside the pink square - pink because all primate basal brain is potentially female - as the original primate condition due to the fact that in primates the female pole is the homogametic side of "Sex/Gender Space* g" (consider also that basal brain is the alive primate basal brain - and basal brain for us means the SBN structures defined by Sarah Newman). Consider at that square at an X axis, the amount of testosterone, increasing from the left to the right and at the Y axis the sensitivity of the system considering the presence of testosterone, decreasing from the upper level to the bottom.
What governs the basal brain inner characteristics?
Genetics, hormones, the womb environment due to external influences as mother stress - which affects T production... a very complex system. We will consider it as 3 simple geometric figures: a Black box square, an original pink square and a rectangular output figure.
The OUTPUT we will name "Core Gender Identity", defined as "How someone -human or not - feels more male or more female" . A sensation humans and non human primates experience surely (see Frans de Waal and Takayoshi Kano works with "bonobos" (Pan paniscus) and Jane Goodall with "chimps" (Pan trogloditas)). That feeling we feel, and also our Pongides Ancestors also feel... and also monkeys surely feel...
Only humans feel it in an human way of feeling... but each species feels male or female in its own way...
The data you obtain as output (Core Gender Identity) are sometimes very reasonable (kind of male input-male output) and sometimes very strange (when we consider a strictly sexist and only bipolar world - where intergender and gender dysphorias would not exist - or at least would be considered "mental disorders" or perhaps sometimes considered even worsest things a "sin" or as...) and you are astonished because you don't very well understand how the two considered factors - T presence and T action -, together, control the primate's basal brain behaviour!
In Germany, some 30 to 40 years ago, at Humboldt University, in the East Berlin, Dr. Gunther Dörner did exactly the same research with rat's brains, and later the same did Dr.Gorski at UCLA- University of California, and both were, then, astonished with their results. Later Dr.Resko at the Oregon Primate's Center, did the same research considering rhesus monkeys' brains, and also Drs.Bonsall & Michael researched in the same way rhesus monkeys basal brains at Emory University in Atlanta, and also they were astonished with their results.
Let me show you a game which mimics this
situation - and their experimental laboratory results - (in some sense this
game is a model for the primate basal brain's organization & behaviour):
You see below the 3 coloured figures I was talking about. One pink square figure at the left (the "basal brain" where our T inputs work), one black square at the right (our "black box" that will transform inputs to outputs), and below that black square a colored rectangle (our output place, as a remote controled answer, as "the core feeling of gender identity").
Consider the fist square, the pink one at the left side of the figure is the ALIVE primate's basal brain DURING ITS ORGANIZATION phase INSIDE THE UTERUS (for primates inside the uterus, for rats including during peri-natal periods), where testosterone influences. So we will INPUT situations at the pink left square, and the OUTPUT we will feel at the rectangle at the bottom of the black square.
Move the mouse (your mouse is the testosterone level & action! - the mouse is your experimentation device), enter the pink square (build the basal brain structure), and move the cursor inside the square, mimicking a lot of possible combinations of inputs... OR A DIVERSITY OF POSSIBLE BASAL BRAIN ORGANIZATION ... SMOOTHLY... as a Zen or a Tai Chi exercise... (sorry folks, I love Tai-Chi - and I believe Nature also loves it!)
The cursor coordinates simulate the two main factors which control the basal brain sex/gender behavior - for the applet the color of the rectangle simulates the "core gender identity" probably the macaque that have that brain would live, depending on the testosterone condition during the basal brain differentiation "in uterus" (depending on your mouse cursor position!).
Output more BLUE is a more male probable core gender identity and an output more PINK a more female gender identity.
Play with the applet (i. e. do experiments with the basal brain of the monkey and try to understand your results... as answers inside a Gender Space* g of possible results as a continuous possible diversity of core gender results!
What you could try in your laboratory? More Testosterone presence triggers more brain masculinization... more
to testosterone (not necessarily due only to AR-androgen receptor insensitivity typical AIS syndromes) triggers less
Put the mouse cursor over the figure and click, or press Enter at your computer. That will liberate/charge the applet.
TRY THE CURSOR. Move slowly, as most of times Nature moves, smoothly ... as a Zen or a Tai Chi exercise...: