Publications de Gijs Plomp | EPFL Graph Search

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Selective attention is a fundamental cognitive mechanism that allows our brain to preferentially process relevant sensory information, while filtering out distracting information. Attention is thought to flexibly gate the communication of irrelevant inform ...

Human observers can accurately estimate statistical summaries from an ensemble of multiple stimuli, including the average size, hue, and direction of motion. The efficiency and speed with which statistical summaries are extracted suggest an automatic mecha ...

We present an approach for tracking fast spatiotemporal cortical dynamics in which we combine white matter connectivity data with source-projected electroencephalographic (EEG) data. We employ the mathematical framework of graph signal processing in order ...

The functional organization of neural processes is constrained by the brain's intrinsic structural connectivity, i.e., the connectome. Here, we explore how structural connectivity can improve the representation of brain activity signals and their dynamics. ...

Under normal viewing conditions, due to the motion of objects and to eye movements, the retinotopic representation of the environment constantly changes. Yet we perceive the world as stable, and we easily keep track of moving objects. Here, we investigated ...

A large portion of the visual cortex is organized retinotopically, but perception is usually non-retinotopic. For example, a reflector on the spoke of a bicycle wheel appears to move on a circular or prolate cycloidal orbit as the bicycle moves forward, wh ...

Whereas much is known about the degenerative effects of aging on cortical tissue, less is known about how aging affects visually evoked electrical activity, and at what latencies. We compared visual processing in elderly and young controls using a visual m ...

We studied the spatiotemporal characteristics of cortical activity in early visual areas and the fusiform gyri (FG) by means of magnetoencephalography (MEG). Subjects performed a visual classification task, in which letters and visually similar pseudolette ...

We considered the hypothesis that spontaneous dissociation between the direction of attention and eye movement causes encoding failure in change detection. We tested this hypothesis by analyzing eye fixation-related potentials (EFRP) at the encoding stage ...

Neuroimaging studies typically compare experimental conditions using average brain responses, thereby overlooking the stimulus-related information conveyed by distributed spatio-temporal patterns of single-trial responses. Here, we take advantage of this r ...

The visual representation of the world is often assumed to be retinotopic, and many visual brain areas are indeed organized retinotopically. Visual perception, however, is not based on a reference frame anchored in retinotopic coordinates. For example, whe ...

Objects moving in the visual scene cause retinal displacements that are not the result of motor commands and thus cannot be accounted for by efference copies. Yet, we easily keep track of moving objects even without following them with our gaze. Here, we i ...

Distributed EEG source imaging can reveal the electrical activity underlying visual perception in both cortical and deeper sources. How well electrical source imaging localizes functionally specialized visual areas, such as V1 and MT, has so far not been d ...

Flankers can strongly deteriorate performance on a visual target (crowding). For example, vernier offset discrimination is strongly affected by neighboring flankers. Interestingly, performance for longer and shorter flankers is better than performance for ...

In visual crowding, target discrimination strongly deteriorates when flanking elements are added. We have recently shown that crowding cannot be explained by simple low-level interactions and that grouping is a key component instead. We presented a vernier ...

When a briefly presented vernier stimulus is followed by a grating consisting of 25 lines, the vernier appears brighter, longer, wider, and superimposed on the grating (shine-through). However, the vernier is largely invisible if two of the lines in the gr ...

The visual cortex exhibits functional specialization that can be routinely demonstrated using hemodynamic measures like fMRI and PET. To understand the dynamic nature of cortical processes, however, source imaging with a high temporal resolution is necessa ...

When presented with dynamic scenes, the brain integrates visual elements across space and time. Such non-retinotopic processing has been intensively studied from a psychophysical point of view, but little is known about the underlying neural processes. Her ...

When elements appear in quick succession they can integrate across space and time. Using high-density EEG techniques we show that such non-retinotopic feature integration is not time-locked to stimulus onset, but has a timing of its own. We presented a cen ...

Gijs Plomp

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Selective attention involves a feature-specific sequential release from inhibitory gating

The anisotropic field of ensemble coding

Connectome spectral analysis to track EEG task dynamics on a subsecond scale

The connectome spectrum as a canonical basis for a sparse representation of fast brain activity

The neural correlates of non-retinotopic motion integration as revealed by high-density EEG

EEG Correlates of Relative Motion Encoding

Age-related changes in visually evoked electrical brain activity

Functional specialization and dynamic resource allocation in visual cortex

Eye fixation-related potentials in change detection

Decoding stimulus-related information from single-trial EEG responses based on voltage topographies

Retinotopic encoding of the Ternus-Pikler display reflected in the early visual areas

Neural correlates of non-retinotopic motion integration

How are non-retinotopic motion signals integrated? -A high-density EEG study

Frontal and mesial temporal brain areas contribute to early visual evoked responses as revealed by electrical source imaging

Crowding suppresses the N1 wave

Neural correlates of visual crowding

The neural correlates of the shine-through effect as revealed by high-density EEG

Electrical source dynamics in three functional localizer paradigms

Non-retinotopic feature integration decreases response-locked brain activity as revealed by electrical neuroimaging

Non-retinotopic feature integration has a neural pace of its own, as revealed by electrical brain imaging