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In previous studies, smooth pursuit eye movements (SPEM) have been shown to be disordered in about 70% of schizophrenics and about 45% of their first-degree relatives. In this report, the role of attention in these eye movements is addressed in three experiments (using as subjects schizophrenics, their first-degree relatives, and normals administered chloral hydrate) that recruit focused attention to the task. These studies show that voluntary attention in the form of inattention, "heedless negligence," or failure to cooperate, is not the specific attentional quality that is disordered in SPEM of schizophrenics and their relatives. Rather, the data both indicate that nonvoluntary attending is specifically disordered in these persons, and implicate a neurophysiological substrate that can be described as a failure of inhibitory, synchronizing integrating systems which may be located in the brain stem.
P S Holzman, and
D L Levy, and
L R Proctor
February 1980,
Perceptual and motor skills,
P S Holzman, and
D L Levy, and
L R Proctor
March 1995,
Biological psychiatry,
P S Holzman, and
D L Levy, and
L R Proctor
September 2014,
Archivos de la Sociedad Espanola de Oftalmologia,
P S Holzman, and
D L Levy, and
L R Proctor
December 1979,
Biological psychiatry,
P S Holzman, and
D L Levy, and
L R Proctor
December 2005,
Brain research. Cognitive brain research,
P S Holzman, and
D L Levy, and
L R Proctor
November 1995,
The Journal of neuroscience : the official journal of the Society for Neuroscience,
P S Holzman, and
D L Levy, and
L R Proctor
January 1975,
Research publications - Association for Research in Nervous and Mental Disease,
P S Holzman, and
D L Levy, and
L R Proctor
November 1997,
Psychological medicine,
P S Holzman, and
D L Levy, and
L R Proctor
August 1995,
Acta psychiatrica Scandinavica,
P S Holzman, and
D L Levy, and
L R Proctor
January 1982,
Archiv fur Psychiatrie und Nervenkrankheiten,
