Lateralization

I'm wondering if anyone has any info or insight on lateralization. E.g.,
what kinds of things cause sounds to become lateralized; what outcomes
develop from lateralized sounds? I recall reading somewhere that Arabic
emphatics are at least sometimes lateralized (as well as being
pharyngealized), which leads me to wonder if there is an established link
between lateralization and pharyngealization.

Thanks!

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Eric Christopherson / *Aiworegs Ghristobhorosyo