Cortical potentials preceding voluntary movement: Evidence for three periods of preparation in man

Barrett, Geoff; Shibasaki, Hiroshi; Neshige, Ryuji

doi:10.1016/0013-4694(86)90017-9

Cited by 136 publications

(64 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is suggested that it is associated with various pre-trigger processes of motor programming such as attention, motivation, motor readiness, and time countdown. In contrast to our previous studies with visually evoked saccades and antisaccades, the present study did not reveal two clearly defined components of premotor negativity: the early PMN1 wave of frontal localization and the late PMN2 with parieto-occipital localization, which we suggest are equivalents of the O-and E-components of the contingent negative variation or readiness potential before hand movement (Batuev, 2001;Barret et al, 1986).…”

Section: Discussioncontrasting

confidence: 99%

“…This was reflected in the intensification and earlier start of the slow premotor negative wave in target conditions in comparison to neutral conditions. Slow premotor negativity has been studied in detail both before hand movement and saccades for the past 30 years (Barret, Shibasaki, & Neshige, 1986;Batuev, 2001). It is suggested that it is associated with various pre-trigger processes of motor programming such as attention, motivation, motor readiness, and time countdown.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Presaccadic Brain Potentials in Conditions of Covert Attention Orienting

Slavutskaya

Shul'govskii

2007

Span. J. Psychol.

View full text Add to dashboard Cite

Twelve healthy subjects underwent investigation of averaged (electroencephalogram) EEG potentials during preparation for motor activity and in the latent period (LP) of visually evoked saccades by presentation of stimuli using Posner's (1980) design of "cost-benefit." It has been shown that covert spatial attention orientation leads to an increase in amplitude and decrease in latency of presaccadic initiation potential peaks within the saccadic latent period (LP) (P-100, N -50). Processes of covert orientation of attention during the interstimulus interval period of anticipation of the target stimulus correlate with the increase of slow negativity of fronto-parietal-temporal localization. Spatial-temporal changes of presaccadic potentials are evidence of the fact that orientation of attention during motor preparation and saccadic initiation is reflected in intensification of fronto-parietal networks of saccadic control and attention, activating the fronto-medio-thalamic and thalamo-parietal modulating systems. Keywords: orienting of attention, saccades, latent period, presaccadic potentialsSe examinaron los potenciales EEG promediados de doce sujetos sanos durante su preparación para actividad motor y en el período latente de sacádicos evocados visualmente por la presentación de estímulos según el diseño de "coste-beneficio" de Posner (1980). Se ha mostrado que la orientación de la atención espacial encubierto lleva a un incremento en la amplitud y un decremento en la latencia de los picos potenciales de iniciación presacádica dentro del período sacádico latente (P-100, N -50). Los procesos encubiertos de orientación de la atención durante el período del intervalo inter-estímulo de anticipación del estímulo meta correlacionan con el incremento de la negatividad lenta de localización fronto-parietal. Cambios espacio-temporales de potenciales presacádicos son evidencia del hecho de que la orientación de la atención durante la preparación motora y la iniciación sacádica se refleja en la intensificación de las redes fronto-parietales de control y atención, activando los sistemas de modulación

show abstract

Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Presaccadic Brain Potentials in Conditions of Covert Attention Orienting

Slavutskaya

Shul'govskii

2007

Span. J. Psychol.

View full text Add to dashboard Cite

show abstract

“…At these sites a change in slope is apparent approximately 500 ms prior to movement onset. The slightly steeper rise of the negativity in the terminal part of the RP has been attributed to contralaterally dominant activity of MI, and is called the N S' (negative slope; Barrett et al 1986). Still closer to movement onset there is a further change in slope of the negativity caused by the so-called motor potential (MP).…”

Section: Task Performancementioning

confidence: 99%

Movement-related potentials preceding voluntary movement are modulated by the mode of movement selection

et al. 1995

View full text Add to dashboard Cite

A bstract In two experiments movement-related cortical potentials preceding voluntary movement were recorded. In experiment 1, subjects performed four motor tasks in volving joystick movements. The four tasks differed in complexity (single vs sequential movements) and in the mode of movement selection, i.e., whether a movement or movement sequence was made in fixed or in self-deter mined directions. The choice of these tasks was based, firstly, on previous electrophysiological studies suggesting an effect of task-complexity on the amplitude of the readi ness potential (RP) and, secondly, on previous positron emission tomography (PET) studies showing that activity of the supplementary motor area' (SMA) is influenced by the mode of movement selection. The results show that, for single movements, RP amplitude is higher preceding freely selected movements than preceding movements in a fixed direction. In experiment 2 this effect was replicated using button presses instead of joystick movements. The results converge with PET evidence obtained in similar tasks and establish that the RP is modulated by the mode of movement selection. This modulation is probably relat ed to differential involvement of the SMA.

show abstract

“…Given its extended duration and the fact that the potential is obtained by response-locked averaging of the EEG, it can only provide relevant temporal information if it can be divided into separate components with well-defined meanings. While a division of the RP into separate components has been proposed (Shibasaki et al, 1980;Barrett et al, 1986a), their identification is often difficult. Investigators have, therefore, used fixed latency criteria for the components, to the effect that any temporal information they might carry is lost (e.g.…”

Section: Introductionmentioning

confidence: 99%