The website for Nintendo’s more recent 3DS title,
Brain Age: Concentration Training,
describes its training as “a new training method . . .
based on recent brain science . . .
an efficient manner of training that always pushes the capabilities of working memory to the limit” (“Brain Age: Concentration Training,” 2012).
The same page includes a box describing a structural MRI result,
with the claim that after 2 months,
“working memory training had increased the volume of the cerebral cortex (in mainly the prefrontal cortex).”
Next to this claim is a brain image with colored blobs labeled “increased cerebral cortex volume due to training,”
and below that is the statement
“It is said that the cerebral cortex’s volume is involved in intelligence. This game contains many kinds of
‘devilish training’ based on the activities used in that experiment.”

鬼トレを2カ月実施した後、MRI検査を行ったところ、大脳皮質の体積が増加し、知能の向上を確認しました。
エビデンスあるじゃんｗｗｗｗｗ