Drag to turn, pinch or scroll to zoom; a drag is never counted as an answer. A tap hits the first surface under your finger, so for a deep part cut the brain open with Side, Top or Front and move the slider.
What counts as a right answer
Either side counts. Most parts come in a left and a right copy; tapping either is right, and both light up after you answer.
A lobe is the gyri it is made of. On this model the frontal lobe is its superior, middle and inferior frontal gyri, its orbitofrontal cortex and its precentral gyrus, so a tap on any of them (or on the prefrontal cortex, which four of them make up) is a right answer for “frontal lobe”. The same goes for the brainstem: a tap on the midbrain, pons or medulla oblongata counts.
The reverse is not true: asked for the pons, a tap on the midbrain is wrong, even though both are brainstem.
A missed tap on the empty background, and any drag that turns the brain, is not scored.
In “Name the lit part” the three wrong names never share a piece of the model with the lit part, so only one of the four names is right: lit the pons, you will not be offered “brainstem”.
The four sets
Lobes (5): frontal, parietal, temporal and occipital lobes and the insula, the five lit together on the lobes page. The insula is hidden inside the lateral sulcus, so you have to cut or look into the side to tap it.
Deep parts (14): the hippocampus, amygdala, thalamus, hypothalamus, pituitary and pineal glands, caudate nucleus, putamen, globus pallidus, internal capsule, corpus callosum and the lateral, third and fourth ventricles. Almost all of them need a slice.
Brainstem (4): the brainstem as a whole and its three parts, midbrain, pons and medulla oblongata, top to bottom.
All parts (40): every part this 3D model has a shape for, including the gyri, the cerebellum and the cingulate gyrus.
A part you miss is asked more often (about four questions in ten come from your missed list) until you get it right once; then it leaves the list.
What this quiz cannot test
Only parts with their own shape in the model are asked. Functional areas such as Broca’s area or Wernicke’s area have no drawn border, so they are not quizzed, and nor are groups such as the basal ganglia or the limbic system (their pieces are).
The model is one adult brain from the BodyParts3D atlas (credits and licence). Real brains vary in size and in exactly where one gyrus ends, so a tap right on a border may land on the neighbour.