一個(gè)國(guó)際研究小組11月15日在英國(guó)《轉(zhuǎn)化精神病學(xué)》（Translational Psychiatry ）期刊上報(bào)告說(shuō),，對(duì)一些常玩電腦游戲的青少年大腦進(jìn)行掃描發(fā)現(xiàn),，他們的大腦結(jié)構(gòu)與其他青少年相比有所不同。
比利時(shí),、德國(guó),、英國(guó)等國(guó)研究人員共同完成的這項(xiàng)報(bào)告說(shuō)，他們把154名14歲青少年分為兩組,，其中一組青少年每周玩電腦游戲超過(guò)9個(gè)小時(shí),，即“頻繁玩家”；另外一組玩電腦游戲較少,。
利用磁共振成像技術(shù)進(jìn)行的大腦掃描顯示,，“頻繁玩家”大腦中的“腹側(cè)紋狀體”比其他人要大。“腹側(cè)紋狀體”被稱為大腦的“激勵(lì)中心”,，與獎(jiǎng)勵(lì)反饋有關(guān),，常常在人們得到外界回報(bào)時(shí)發(fā)揮作用，比如賭博贏錢(qián)或享受美食的時(shí)候,。
對(duì)這種現(xiàn)象背后的因果關(guān)系,，研究人員表示暫不清楚,，可能是長(zhǎng)期玩電腦游戲?qū)е铝舜竽X結(jié)構(gòu)的變化，也可能是大腦結(jié)構(gòu)不同導(dǎo)致部分人更喜歡玩電腦游戲,。
比利時(shí)根特大學(xué)研究人員西蒙·庫(kù)恩說(shuō),，他們計(jì)劃請(qǐng)一些沒(méi)有玩過(guò)電腦游戲的成年人參與下一步試驗(yàn)，掃描他們游戲前后的大腦結(jié)構(gòu),，以確定玩電腦游戲是否會(huì)導(dǎo)致大腦結(jié)構(gòu)發(fā)生變化,。(生物谷 Bioon.com)
doi:10.1038/tp.2011.53
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The neural basis of video gaming
S K|[uuml]|hn, A Romanowski, C Schilling, R Lorenz, C M|[ouml]|rsen, N Seiferth, T Banaschewski, A Barbot, G J Barker, C B|[uuml]|chel, P J Conrod, J W Dalley, H Flor, H Garavan, B Ittermann, K Mann, J-L Martinot, T Paus, M Rietschel, M N Smolka, A Str|[ouml]|hle, B Walaszek, G Schumann, A Heinz, J Gallinat.
Video game playing is a frequent recreational activity. Previous studies have reported an involvement of dopamine-related ventral striatum. However, structural brain correlates of video game playing have not been investigated. On magnetic resonance imaging scans of 154 14-year-olds, we computed voxel-based morphometry to explore differences between frequent and infrequent video game players. Moreover, we assessed the Monetary Incentive Delay (MID) task during functional magnetic resonance imaging and the Cambridge Gambling Task (CGT). We found higher left striatal grey matter volume when comparing frequent against infrequent video game players that was negatively correlated with deliberation time in CGT. Within the same region, we found an activity difference in MID task: frequent compared with infrequent video game players showed enhanced activity during feedback of loss compared with no loss. This activity was likewise negatively correlated with deliberation time. The association of video game playing with higher left ventral striatum volume could reflect altered reward processing and represent adaptive neural plasticity.
