下列关于感觉规律的表述，正确的有( )。
正确答案及解析
正确答案
解析
感觉具有补偿作用，即当某些感觉失去以后，可以由其他感觉来弥补。由于刺激物持续作用于同一感受器，从而使感受性发生变化的现象，叫感觉适应。感觉适应可以引起感受性的提高，也可以引起感受性的降低。一般情况下，持续作用的强刺激使感受性降低；持续作用的弱刺激使感受性增高。感受性与感觉阈限成反比关系，感觉阈限越大，感受能力越差。不同刺激作用于同一感觉器官，使感受性发生变化的现象叫感觉对比。感觉对比分为同时对比和继时对比两种。
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