The invention provides neuron-derived cells obtained by transfecting a receptor-expressing nucleic acid having an aryl hydrocarbon receptor gene, wherein outgrowth of neurites is not observed without adding a substance for the aryl hydrocarbon receptor, and outgrowth of neurites is observed by adding the substance for the aryl hydrocarbon receptor. The invention also provides a method for determining the presence of neurotoxicity of a test substance, a method for acquiring a marker for determining the presence of neurotoxicity of the test substance, a method for acquiring a marker for neurological dysfunction, and a method for determining the effect of the test substance on neurological dysfunction using such cells.