BACKGROUND: Deficits in the generation and control of saccades have been described in clinically defined frontotemporal dementia (FTD) and Alzheimer disease (AD). OBJECTIVE: To determine the saccade abnormalities associated with autopsy-defined cases of frontotemporal lobar degeneration (FTLD) and of AD, because clinical FTD syndromes can correspond to a number of different underlying neuropathologic FTD and non-FTD diagnoses. DESIGN: An infrared eye tracker was used to record visually guided saccades to 10° targets and antisaccades in subjects with autopsy-confirmed FTD and subjects with autopsy-confirmed AD, a mean (SE) of 35.6 (10.0) months prior to death, and age-matched normal controls. Twelve subjects with FTD had an FTLD-TAR DNA-binding protein 43 pathology, 15 had an FTLD-tau pathology, and 1 subject showed an FTLD-fused in sarcoma protein pathology. Receiver operating curve statistics were used to determine the diagnostic value of the oculomotor variables. Neuroanatomical correlates of oculomotor abnormalities were investigated using voxel-based morphometry. SETTING: Memory and Aging Center, Department of Neurology, University of California, San Francisco. PARTICIPANTS: A total of 28 subjects with autopsy-confirmed FTD, 10 subjects with autopsy-confirmed AD, and 27 age-matched normal controls. RESULTS: All subjects with FTD or AD were impaired relative to normal controls on the antisaccade task. However, only FTLD-tau and AD cases displayed reflexive visually guided saccade abnormalities. The AD cases displayed prominent increases in horizontal saccade latency that differentiated them from the FTD cases. Impairments in velocity and gain were most severe in individuals with progressive supranuclear palsy but were also present in other tauopathies. By using vertical and horizontal saccade velocity and gain as our measures, we were able to differentiate patients with progressive supranuclear palsy from other patients. Vertical saccade velocity was strongly correlated with dorsal midbrain volume. CONCLUSION: Decreased visually guided saccade velocity and gain are suggestive of underlying tau pathology in FTD, with vertical saccade abnormalities most diagnostic of progressive supranuclear palsy.
BACKGROUND:Deficits in the generation and control of saccades have been described in clinically defined frontotemporal dementia (FTD) and Alzheimer disease (AD). OBJECTIVE: To determine the saccade abnormalities associated with autopsy-defined cases of frontotemporal lobar degeneration (FTLD) and of AD, because clinical FTD syndromes can correspond to a number of different underlying neuropathologic FTD and non-FTD diagnoses. DESIGN: An infrared eye tracker was used to record visually guided saccades to 10° targets and antisaccades in subjects with autopsy-confirmed FTD and subjects with autopsy-confirmed AD, a mean (SE) of 35.6 (10.0) months prior to death, and age-matched normal controls. Twelve subjects with FTD had an FTLD-TAR DNA-binding protein 43 pathology, 15 had an FTLD-tau pathology, and 1 subject showed an FTLD-fused in sarcoma protein pathology. Receiver operating curve statistics were used to determine the diagnostic value of the oculomotor variables. Neuroanatomical correlates of oculomotor abnormalities were investigated using voxel-based morphometry. SETTING: Memory and Aging Center, Department of Neurology, University of California, San Francisco. PARTICIPANTS: A total of 28 subjects with autopsy-confirmed FTD, 10 subjects with autopsy-confirmed AD, and 27 age-matched normal controls. RESULTS: All subjects with FTD or AD were impaired relative to normal controls on the antisaccade task. However, only FTLD-tau and AD cases displayed reflexive visually guided saccade abnormalities. The AD cases displayed prominent increases in horizontal saccade latency that differentiated them from the FTD cases. Impairments in velocity and gain were most severe in individuals with progressive supranuclear palsy but were also present in other tauopathies. By using vertical and horizontal saccade velocity and gain as our measures, we were able to differentiate patients with progressive supranuclear palsy from other patients. Vertical saccade velocity was strongly correlated with dorsal midbrain volume. CONCLUSION: Decreased visually guided saccade velocity and gain are suggestive of underlying tau pathology in FTD, with vertical saccade abnormalities most diagnostic of progressive supranuclear palsy.
Authors: R Murray; M Neumann; M S Forman; J Farmer; L Massimo; A Rice; B L Miller; J K Johnson; C M Clark; H I Hurtig; M L Gorno-Tempini; V M-Y Lee; J Q Trojanowski; M Grossman Journal: Neurology Date: 2007-04-17 Impact factor: 9.910
Authors: K A Josephs; R C Petersen; D S Knopman; B F Boeve; J L Whitwell; J R Duffy; J E Parisi; D W Dickson Journal: Neurology Date: 2006-01-10 Impact factor: 9.910
Authors: Nigel J Cairns; Eileen H Bigio; Ian R A Mackenzie; Manuela Neumann; Virginia M-Y Lee; Kimmo J Hatanpaa; Charles L White; Julie A Schneider; Lea Tenenholz Grinberg; Glenda Halliday; Charles Duyckaerts; James S Lowe; Ida E Holm; Markus Tolnay; Koichi Okamoto; Hideaki Yokoo; Shigeo Murayama; John Woulfe; David G Munoz; Dennis W Dickson; Paul G Ince; John Q Trojanowski; David M A Mann Journal: Acta Neuropathol Date: 2007-06-20 Impact factor: 17.088
Authors: David R Williams; Rohan de Silva; Dominic C Paviour; Alan Pittman; Hilary C Watt; Linda Kilford; Janice L Holton; Tamas Revesz; Andrew J Lees Journal: Brain Date: 2005-03-23 Impact factor: 13.501
Authors: Adam L Boxer; Siobhan Garbutt; Katherine P Rankin; Joanna Hellmuth; John Neuhaus; Bruce L Miller; Stephen G Lisberger Journal: J Neurosci Date: 2006-06-07 Impact factor: 6.167
Authors: Adam L Boxer; Jin-Tai Yu; Lawrence I Golbe; Irene Litvan; Anthony E Lang; Günter U Höglinger Journal: Lancet Neurol Date: 2017-06-13 Impact factor: 44.182
Authors: Mark W Albers; Grover C Gilmore; Jeffrey Kaye; Claire Murphy; Arthur Wingfield; David A Bennett; Adam L Boxer; Aron S Buchman; Karen J Cruickshanks; Davangere P Devanand; Charles J Duffy; Christine M Gall; George A Gates; Ann-Charlotte Granholm; Takao Hensch; Roee Holtzer; Bradley T Hyman; Frank R Lin; Ann C McKee; John C Morris; Ronald C Petersen; Lisa C Silbert; Robert G Struble; John Q Trojanowski; Joe Verghese; Donald A Wilson; Shunbin Xu; Li I Zhang Journal: Alzheimers Dement Date: 2014-07-09 Impact factor: 21.566
Authors: Judy Pa; Shubir Dutt; Jacob B Mirsky; Hilary W Heuer; Paul Keselman; Erwin Kong; Andrew Trujillo; Adam Gazzaley; Joel H Kramer; William W Seeley; Bruce L Miller; Adam L Boxer Journal: Neuroimage Date: 2014-03-24 Impact factor: 6.556
Authors: Raquel C Gardner; Adam L Boxer; Andrew Trujillo; Jacob B Mirsky; Christine C Guo; Efstathios D Gennatas; Hilary W Heuer; Eric Fine; Juan Zhou; Joel H Kramer; Bruce L Miller; William W Seeley Journal: Ann Neurol Date: 2013-03-27 Impact factor: 10.422
Authors: Melissa J Armstrong; Irene Litvan; Anthony E Lang; Thomas H Bak; Kailash P Bhatia; Barbara Borroni; Adam L Boxer; Dennis W Dickson; Murray Grossman; Mark Hallett; Keith A Josephs; Andrew Kertesz; Suzee E Lee; Bruce L Miller; Stephen G Reich; David E Riley; Eduardo Tolosa; Alexander I Tröster; Marie Vidailhet; William J Weiner Journal: Neurology Date: 2013-01-29 Impact factor: 9.910