alzheimer'sdisease alzheimerdisease analysis behavior bindingsites brain chemotherapy cholinergicmechanisms cholinergicreceptors cholinesteraseinhibitors congresses drugeffects drugtherapy endorphin forensicneuropsychology legislation medical metabolism molecularbiology myelinproteins nervegrowthfactor neuraltransmission neurobiology neurochemistry neuroendocrinology neurology neuropeptides neurophysiology neurotransmitteragents neurotransmitterreceptors neurotransmitters nociceptors pain parasympathomimetics physiologicalaspects physiologicaleffect physiology radioligandassay receptors recombinantdna serotonin synapticreceptors therapeuticuse therapy