The invention provides N-substituted heterocyclic-sulfonamides for use in treating or preventing cognitive disorders, such as Alzheimer's Disease. ##STR00001## Compounds of particular interest are defined by Formula (I), wherein R.sub.1, R.sub.2, Z and n are as described in the specification. The invention also encompasses pharmaceutical compositions comprising compounds of Formula (I) as well as methods of treating cognitive disorders using compounds of Formula (I).

 
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