Electromyography of Human Saccadic Eye Movements

Tamler, Edward; Marg, Elwin; Jampolsky, Arthur; Nawratzki, I

doi:10.1001/archopht.1959.04220040119017

Cited by 32 publications

(5 citation statements)

References 5 publications

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“…During a normal saccade there is a brief (up to 150 m.sec.) burst of activity in the prime mover with complete inhibition of its antagonist muscle (Tamler et al, 1959). In contrast, in the present subject, motor units were recruited only slowly in the prime mover with a parallel slowed inhibition of motor units in the antagonist.…”

Section: Case Descriptioncontrasting

confidence: 76%

Localization of Objects in Visual Space With Abnormal Saccadic Eye Movements

Starr

1967

Brain

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Section: Case Descriptioncontrasting

confidence: 76%

Localization of Objects in Visual Space With Abnormal Saccadic Eye Movements

Starr

1967

Brain

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“…The inhibition of the activity of the antagonist caused by reciprocal innervation is seen in all published records (see e.g. Bj6rk & Kugelberg, 1953;Miller, 1958;Tamler, Marg, Jampolsky & Nawratski;1959, Breinin, 1962. It is also clear that the level of the activity in the agonist increases at the start of the saccade, but whereas the records of Bjork & Kugelberg (1953), Miller (1958), and Breinin (1962 show a gradation of activity during a saccade, those of Tamler et al (1959) show little variation.…”

mentioning

confidence: 88%

The dynamics of small saccadic eye movements

Thomas¹

1969

The Journal of Physiology

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SUMMARY1. The mechanical characteristics of the system comprising the eyeball and its attachments have been determined, by applying rotational forces to the eyeball, and using an accelerometer on a contact lens to measure the resulting movement.2. The angular acceleration-versus-time curves of small saccades have been recorded. Some of these saccades are made whilst the eye is being vibrated by external forces.3. A mechanical model of the orbital system has been formulated. This is considered to bear a relationship to the structures in the orbit. 4. The model has been used to deduce the force pattern of the active component in the extraocular muscles during the execution of a saccade. It is concluded that a saccade is initiated by a rapid rise of tension. After a short time, the tension falls to a lower level, which is the new steady-state level. The present findings are therefore basically different from those of previous workers, in that we deduce a change in the force pattern during the course of the movement.5. In the execution of saccades of various sizes, both the strength and duration of the brief heightened tension are found to vary. For a 4 degree saccade, the transient tension is approximately 36 g, lasting for approxi-

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“…At the beginning of a movement, there is increased activity (pulse) in the agonist muscles and a simultaneous inhibition of antagonist activity that rapidly accelerates the eye or the limb toward the desired new position (for eye movements, see Fuchs & Luschei, 1970; Miller, 1958; Robinson, 1970; Tamler, Marg, Jampolsky, & Nawratzki, 1959; Thomas, 1969; for limb movements, see Hallett, Shahani, & Young, 1975; Polit & Bizzi, 1979). The agonist activity subsides near the middle of the movement and is followed by a change in the steady-state activity (step) of opposing muscle groups, which serves to hold the new final position (for eye movements, see Fuchs & Luschei, 1970; Miller, 1958; Reinhart & Zuber, 1971; Tamler et al, 1959; for limb movements, see Polit & Bizzi, 1979). Thus, it appears that some common principles may underlie organization and control in both the eye and limb movement systems.…”

Section: Comparison Of Limb Movements and Saccadic Eye Movementsmentioning

confidence: 99%

Speed and accuracy of saccadic eye movements: Characteristics of impulse variability in the oculomotor system.

Abrams¹,

Meyer²,

Kornblum³

1989

Journal of Experimental Psychology: Human Perception and Perfor

165

144

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Dynamic characteristics observed in the trajectories of saccadic eye movements reveal systematic variability of the force pulses used to move the eyes. This variability causes saccades to exhibit a linear speed-accuracy trade-off: As the average distance and duration of saccades toward specified target points increase, the standard deviations of saccadic-movement endpoints increase linearly with the saccades' average velocity. The linear trade-off, and other observed stochastic properties of saccades, may be attributed to noise in neuromotor processes and may be described in terms of an impulse-variability model originally designed for characterizing limb movements. According to the model, both eye and limb movements are controlled through stochastic force and time parameters that govern movement kinematics. Such an account may promote a unified conceptual framework for understanding a wide range of motor behavior.

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Electromyography of Human Saccadic Eye Movements

Cited by 32 publications

References 5 publications

Localization of Objects in Visual Space With Abnormal Saccadic Eye Movements

Localization of Objects in Visual Space With Abnormal Saccadic Eye Movements

The dynamics of small saccadic eye movements

Speed and accuracy of saccadic eye movements: Characteristics of impulse variability in the oculomotor system.

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