Saccade size and lambda complex in man

Yagi, Akihiro

doi:10.3758/bf03326658

Cited by 76 publications

(78 citation statements)

References 16 publications

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“…Therefore, the lambda response is believed to be elicited by the afferent inflow beginning at the fixation pause, since visual suppression (e.g., Volkmann, 1986) occurs during saccades. Yagi's (1979) finding was confirmed by other studies (Billings, 1989;Szirtes et al, 1982;Thickbroom et al, 1991;Yagi, 1981a).…”

supporting

confidence: 82%

“…For example, most activities in the FEF, whose neurons project to the superior colliculus, are terminated by the completion of saccades (Bruce & Goldberg, 1985). In contrast, the lambda response is considered to be evoked after the offset of saccades (Yagi, 1979). Indeed, the dipoles for the lambda response were calculated at the peak latency of the lambda response-that is, at some 80 msec after the offset of saccades.…”

Section: Discussionmentioning

confidence: 99%

“…The lambda response had been considered to occur at the onset of saccades (Kurtzberg & Vaughan, 1973). Yagi (1979), however, insisted that the lambda response is associated with the offset of saccades. Yagi (1979) compared two kinds of lambda responses: one time-locked to the onset of saccades, and the other time-locked to the offset of saccades.…”

mentioning

confidence: 99%

“…Yagi (1979), however, insisted that the lambda response is associated with the offset of saccades. Yagi (1979) compared two kinds of lambda responses: one time-locked to the onset of saccades, and the other time-locked to the offset of saccades. The latency from the locked-point of the latter was almost invariant regardless of different saccade sizes, whereas that of the former increased in proportion to the saccade amplitude.…”

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confidence: 99%

“…EFRPs are nearly synonymous with the lambda complex (Lesèvre & Rémond, 1973;Szirtes, Marton, & Breuer, 1982;Yagi, 1979) or the lambda wave (Billings, 1989;Kurtzberg & Vaughan, 1973;Morton, Merton, & Cobb, 1974;Thickbroom, Knezevic, Carroll, & Mastaglia, 1991). The most prominent component of the EFRP is called the lambda response, which is a sharp positive component with a latency of about 80 msec from the offset of saccades.…”

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confidence: 99%

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Comparison between the lambda response of eye-fixation-related potentials and the P100 component of pattern-reversal visual evoked potentials

Kazai

Yagi

2003

Cognitive, Affective, & Behavioral Neuroscience

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The purpose of this study was to compare the lambda response of eye-fixation-related potentials (EFRPs) with the P100 component of pattern-reversal visual-evoked potentials. EFRPs were obtained by averaging EEGs time-locked to the offset of the saccade. The dipole of the lambda response and that of the P100 component were estimated by the dipole-tracing method (Musha & Homma, 1990). The locations of their dipoles at the occipital sites were very close to each other when the difference waveform, which was calculatedby subtracting the EFRP to the patternless stimulus from the EFRP to the patterned stimulus, was used for the lambda response. This finding implies that the lambda response and P100 have a common neural generator in the visual cortex. However, the peak latency of the lambda response was shorter than that of P100. The saccades in the EFRP trial were considered to be the cause of the difference.

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supporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Comparison between the lambda response of eye-fixation-related potentials and the P100 component of pattern-reversal visual evoked potentials

Kazai

Yagi

2003

Cognitive, Affective, & Behavioral Neuroscience

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Early event‐related cortical activity originating in the frontal eye fields and inferior parietal lobe predicts the occurrence of correct and error saccades

Ptak¹,

Camen²,

Morand³

et al. 2011

Human Brain Mapping

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Although the cortical circuitry underlying saccade execution has well been specified by neurophysiological and functional imaging studies, the temporal dynamics of cortical activity predicting the occurrence of voluntary or reflexive saccades in humans are largely unknown. Here, we examined electrophysiological activity preceding the onset of correct (i.e., voluntary) or error (i.e., reflexive) saccades in an oculomotor capture task. Participants executed saccades to lateralized visual targets while attempting to inhibit reflexive glances to abruptly appearing distracters. Since the visual display was identical for both types of saccades, different electrophysiological patterns preceding correct and error saccades could not be explained by low-level perceptual differences. Compared to correct saccades electrophysiological activity preceding error saccades showed significant differences of the scalp electric field and of voltage amplitudes at posterior electrodes. In addition, though error saccades had significantly shorter latency than correct saccades a prolonged topographic configuration of electric potentials prior to error saccades was found ∼120-140 ms following target onset. In agreement with the known asymmetry in hemispheric dominance for spatial attention, distinct electrophysiological patterns were only found for leftward saccades. While error saccades were associated with stronger activity in the right Frontal Eye Field, correct saccades were preceded by stronger activity in the inferior parietal lobule. These findings suggest that selection of the saccade target in a conflicting situation is determined by early top-down biases originating in frontal and parietal cortical regions critical for spatial attention and saccade programming.

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Are eye movement evoked potentials different from pattern reversal evoked potentials?

1987

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The averaged lambda wave elicited by saccadic eye movements across a checkerboard pattern has been reported to differ from checkerboard reversal evoked responses, even when the electroencephalographic responses were corrected for the artefact caused by the movement of the dipole moment of the eye itself. Because of these differences it was suggested that the recording of the lambda wave might provide extra information in pathological circumstances. We performed experiments in which the parameters of the pattern (high contrast checkerboard pattern, 20' checks, large field 72 x 72 degrees) shift across the retina were carefully adjusted. For instance, eye movements were made across an integer and odd number of checks in order to mimic the pattern reversal. Furthermore, the timing of the pattern movement in the pattern reversal condition was adjusted so as to simulate the saccadic eye movement. The results seem to suggest that the reported dissimilarities between pattern reversal and eye movement evoked responses can be accounted for by the small differences of the retinal shift in the two conditions.

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Saccade size and lambda complex in man

Cited by 76 publications

References 16 publications

Comparison between the lambda response of eye-fixation-related potentials and the P100 component of pattern-reversal visual evoked potentials

Comparison between the lambda response of eye-fixation-related potentials and the P100 component of pattern-reversal visual evoked potentials

Early event‐related cortical activity originating in the frontal eye fields and inferior parietal lobe predicts the occurrence of correct and error saccades

Are eye movement evoked potentials different from pattern reversal evoked potentials?

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