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Blink amplitude but not saccadic hypometria indicates carriers of Parkin mutations

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Abstract

We investigated saccades, eyelid blinks, and their interaction in symptomatic (n = 22) and asymptomatic (n = 31) subjects with (n = 19) and without (n = 34) Parkin mutations. Saccadic hypometria was correlated with clinical symptoms of Parkinson’s disease, irrespective of mutational status. By contrast, blink amplitude was increased in carriers of Parkin mutations independent of their clinical status. Saccade main sequence and blink effects on saccades were normal. We propose that increased blink amplitude may serve as an endophenotype in carriers of Parkin mutations.

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Correspondence to C. Helmchen.

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Received in revised form: 1 January 2006

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Helmchen, C., Schwekendiek, A., Pramstaller, P. et al. Blink amplitude but not saccadic hypometria indicates carriers of Parkin mutations . J Neurol 253, 1071–1075 (2006). https://doi.org/10.1007/s00415-006-0168-1

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  • DOI: https://doi.org/10.1007/s00415-006-0168-1

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