content_image/302083.jpg content_image/302084.jpg
<img src='content_image/302083.jpg'>

<img src='content_image/302084.jpg'>

to stabilize not only periodic motions but also almost periodic ones. Other chaos control methods such as the Pyragas method [70] can also be used for that purpose. It is worth noting that the presented method is appropriate to obtain route to chaos by intermittency [71] in which regular behavior of almost periodic type is interrupted by sporadic bursts of chaotic behavior. According to Watanabe et al. [53] chaos increases the capacity of memorizing in neural networks. One can suppose that chaos with almost periodic motions provides a memory with a larger capacity 

than that with periodic motions. Therefore, the obtained results may be useful for the theory of neural networks and investigations of brain activities. 

