scholarly journals Erratum to: Automatic change detection in vision: Adaptation, memory mismatch, or both? II: Oddball and adaptation effects on event-related potentials

2017 ◽  
Vol 79 (8) ◽  
pp. 2642-2642
Author(s):  
Flóra Bodnár ◽  
Domonkos File ◽  
István Sulykos ◽  
Krisztina Kecskés-Kovács ◽  
István Czigler
Keyword(s):  
Change Detection ◽  
Event Related Potentials ◽  
Related Potentials ◽  
Adaptation Effects

scholarly journals Automatic change detection in vision: Adaptation, memory mismatch, or both? II: Oddball and adaptation effects on event-related potentials

2017 ◽  
Vol 79 (8) ◽  
pp. 2396-2411 ◽  
Author(s):  
Flóra Bodnár ◽  
Domonkos File ◽  
István Sulykos ◽  
Krisztina Kecskés-Kovács ◽  
István Czigler
Keyword(s):  
Change Detection ◽  
Event Related Potentials ◽  
Related Potentials ◽  
Adaptation Effects

scholarly journals Object maintenance beyond their visible parts in working memory

2018 ◽  
Vol 119 (1) ◽  
pp. 347-355 ◽  
Author(s):  
Siyi Chen ◽  
Thomas Töllner ◽  
Hermann J. Müller ◽  
Markus Conci
Keyword(s):  
Working Memory ◽  
Change Detection ◽  
Visual Working Memory ◽  
Memory Load ◽  
Mental Image ◽  
Event Related Potentials ◽  
Visual Input ◽  
Related Potentials ◽  
Physically Identical ◽  
Partially Occluded

Completion of a partially occluded object requires that a representation of the whole is constructed based on the information provided by the physically specified parts of the stimulus. Such processes of amodal completion rely on the generation and maintenance of a mental image that renders the completed object in visual working memory (VWM). The present study examined this relationship between VWM storage and processes of object completion. We recorded event-related potentials to track VWM maintenance by means of the contralateral delay activity (CDA) during a change detection task in which composite objects (notched shapes abutting an occluding shape) to be memorized were primed to induce either a globally completed object or a noncompleted, mosaic representation. The results revealed an effect of completion in VWM despite physically identical visual input: change detection was more accurate for completed compared with mosaic representations when observers were required to memorize two objects, and these differences were reduced with four memorized items. At the electrophysiological level, globally completed (vs. mosaic) objects gave rise to a corresponding increase in CDA amplitudes. These results indicate that although incorporating the occluded portions of the presented shapes requires mnemonic resources, the complete object representations thus formed in VWM improve change detection performance by providing a more simple, regular shape. Overall, these findings demonstrate that mechanisms of object completion modulate VWM, with the memory load being determined by the structured representations of the memorized stimuli. NEW & NOTEWORTHY This study shows that completion of partially occluded objects requires visual working memory (VWM) resources. In the experiment reported, we induced observers to memorize a given visual input either as completed or as noncompleted objects. The results revealed both a behavioral performance advantage for completed vs. noncompleted objects despite physically identical input, and an associated modulation of an electrophysiological component that reflects VWM object retention, thus indicating that constructing an integrated object consumes mnemonic resources.

Vection Attenuates N400 Event-Related Potentials in a Change-Detection Task

Perception ◽  
2019 ◽  
Vol 48 (8) ◽  
pp. 702-730
Author(s):  
Paweł Stróżak ◽  
Paweł Augustynowicz ◽  
Marta Ratomska ◽  
Piotr Francuz ◽  
Agnieszka Fudali-Czyż
Keyword(s):  
Change Detection ◽  
Event Related Potentials ◽  
Detection Task ◽  
Change Detection Task ◽  
Related Potentials

Time Course of Brain Activity during Change Blindness and Change Awareness: Performance is Predicted by Neural Events before Change Onset

2006 ◽  
Vol 18 (12) ◽  
pp. 2108-2129 ◽  
Author(s):  
Gilles Pourtois ◽  
Michael De Pretto ◽  
Claude-Alain Hauert ◽  
Patrik Vuilleumier
Keyword(s):  
Change Detection ◽  
Neural Activity ◽  
Time Course ◽  
Brain Activity ◽  
Change Blindness ◽  
Event Related Potentials ◽  
Distinct Pattern ◽  
Event Related Potential ◽  
Related Potentials ◽  
Visual Changes

People often remain “blind” to visual changes occurring during a brief interruption of the display. The processing stages responsible for such failure remain unresolved. We used event-related potentials to determine the time course of brain activity during conscious change detection versus change blindness. Participants saw two successive visual displays, each with two faces, and reported whether one of the faces changed between the first and second displays. Relative to blindness, change detection was associated with a distinct pattern of neural activity at several successive processing stages, including an enhanced occipital P1 response and a sustained frontal activity (CNV-like potential) after the first display, before the change itself. The amplitude of the N170 and P3 responses after the second visual display were also modulated by awareness of the face change. Furthermore, a unique topography of event-related potential activity was observed during correct change and correct no-change reports, but not during blindness, with a recurrent time course in the stimulus sequence and simultaneous sources in the parietal and temporo-occipital cortex. These results indicate that awareness of visual changes may depend on the attentional state subserved by coordinated neural activity in a distributed network, before the onset of the change itself.

scholarly journals Repetition suppression for visual actions in the macaque superior temporal sulcus

2016 ◽  
Vol 115 (3) ◽  
pp. 1324-1337 ◽  
Author(s):  
Pradeep Kuravi ◽  
Vittorio Caggiano ◽  
Martin Giese ◽  
Rufin Vogels
Keyword(s):  
Mirror Neurons ◽  
Temporal Cortex ◽  
Event Related Potentials ◽  
Superior Temporal Sulcus ◽  
Inferior Temporal Cortex ◽  
Repetition Suppression ◽  
Related Potentials ◽  
Hand Action ◽  
Spiking Activity ◽  
Adaptation Effects

In many brain areas, repetition of a stimulus usually weakens the neural response. This “adaptation” or repetition suppression effect has been observed with mass potential measures such as event-related potentials (ERPs), in fMRI BOLD responses, and locally with local field potentials (LFPs) and spiking activity. Recently, it has been reported that macaque F5 mirror neurons do not show repetition suppression of their spiking activity for single repetitions of hand actions, which disagrees with human fMRI adaptation studies. This finding also contrasts with numerous studies showing repetition suppression in macaque inferior temporal cortex, including the rostral superior temporal sulcus (STS). Since the latter studies employed static stimuli, we assessed here whether the use of dynamic action stimuli abolishes repetition suppression in the awake macaque STS. To assess adaptation effects in the STS, we employed the same hand action movies as used when examining adaptation in F5. The upper bank STS neurons showed repetition suppression during the approaching phase of the hand action, which corresponded to the phase of the action for which these neurons responded overall the strongest. The repetition suppression was present for the spiking activity measured in independent single-unit and multiunit recordings as well as for the LFP power at frequencies > 50 Hz. Together with previous data in F5, these findings suggest that adaptation effects differ between F5 mirror neurons and the STS neurons.

Auditory event-related potentials reflect dedicated change detection activity for higher-order acoustic transitions

2012 ◽  
Vol 91 (1) ◽  
pp. 142-149 ◽  
Author(s):  
Annekathrin Weise ◽  
Erich Schröger ◽  
Balázs Fehér ◽  
Tímea Folyi ◽  
János Horváth
Keyword(s):  
Change Detection ◽  
Event Related Potentials ◽  
Higher Order ◽  
Auditory Event ◽  
Related Potentials ◽  
Auditory Event Related Potentials

scholarly journals An EEG study of Detection without Localisation in Change Blindness

2019 ◽  
Author(s):  
Catriona L. Scrivener ◽  
Asad Malik ◽  
Jade Marsh ◽  
Michael Lindner ◽  
Etienne B. Roesch
Keyword(s):  
Individual Differences ◽  
Change Detection ◽  
False Alarm ◽  
Change Blindness ◽  
Visual Awareness ◽  
Reaction Times ◽  
Colour Change ◽  
Event Related Potentials ◽  
Eeg Data ◽  
Related Potentials

AbstractPrevious studies of change blindness have suggested a distinction between detection and localisation of changes in a visual scene. Using a simple paradigm with an array of coloured squares, the present study aimed to further investigate differences in event-related potentials (ERPs) between trials in which participants could detect the presence of a colour change but not identify the location of the change (sense trials), versus those where participants could both detect and localise the change (localise trials). Individual differences in performance were controlled for by adjusting the difficulty of the task in real time. Behaviourally, reaction times for sense, blind, and false alarm trials were distinguishable when comparing across levels of participant certainty. In the EEG data, we found no significant differences in the visual awareness negativity ERP, contrary to previous findings. In the N2pc range, both awareness conditions (localise and sense) were significantly different to trials with no change detection (blind trials), suggesting that this ERP is not dependent on explicit awareness. Within the late parietal positivity range, all conditions were significantly different. These results suggest that changes can be ‘sensed’ without knowledge of the location of the changing object, and that participant certainty scores can provide valuable information about the perception of changes in change blindness.

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