Gallagher Maria, Arshad Iqra, Ferrè Elisa Raffaella
Department of Psychology, Royal Holloway, University of London, Egham, UK.
Exp Brain Res. 2019 Apr;237(4):989-994. doi: 10.1007/s00221-019-05479-1. Epub 2019 Jan 30.
Human behaviour is a trade-off between exploitation of familiar resources and exploration of new ones. In a challenging environment-such as outer space-making the correct decision is vital. On Earth, gravity is always there, and is an important reference for behaviour. Thus, altered gravitational signals may affect behaviour control strategies. Here, we investigated whether changing the body's orientation to the gravitational vector would modulate the balance between routine and novel behaviour. Participants completed a random number generation task while upright or supine. We found decreased randomness when participants were supine. In particular, the degree of equiprobability of pairs of consecutive responses was reduced in the supine orientation. Online gravitational signals may shape the balance between exploitation and exploration, in favour of more stereotyped and routine responses.
人类行为是在利用熟悉资源和探索新资源之间的一种权衡。在具有挑战性的环境中——比如外层空间——做出正确的决策至关重要。在地球上，重力始终存在，并且是行为的重要参考依据。因此，改变的重力信号可能会影响行为控制策略。在此，我们研究了改变身体相对于重力矢量的方向是否会调节常规行为和新颖行为之间的平衡。参与者在直立或仰卧时完成一项随机数字生成任务。我们发现参与者仰卧时随机性降低。特别是，仰卧姿势下连续反应对的等概率程度降低。在线重力信号可能会塑造利用和探索之间的平衡，有利于更刻板和常规的反应。
