scholarly journals Event-related potential and functional MRI measures of face-selectivity are highly correlated: A simultaneous ERP-fMRI investigation

2010 ◽  
Vol 31 (10) ◽  
pp. 1490-1501 ◽  
Author(s):  
Boaz Sadeh ◽  
Ilana Podlipsky ◽  
Andrey Zhdanov ◽  
Galit Yovel
Keyword(s):  
Functional Mri ◽  
Event Related Potential ◽  
Face Selectivity ◽  
Highly Correlated

scholarly journals Impaired target detection in schizophrenia and the ventral attentional network: Findings from a joint event-related potential–functional MRI analysis

2015 ◽  
Vol 9 ◽  
pp. 95-102 ◽  
Author(s):  
Jonathan K. Wynn ◽  
Amy M. Jimenez ◽  
Brian J. Roach ◽  
Alexander Korb ◽  
Junghee Lee ◽  
...  
Keyword(s):  
Functional Mri ◽  
Target Detection ◽  
Event Related Potential ◽  
Attentional Network ◽  
Joint Event

scholarly journals Illusory and Real Contour Processing: Findings from a Joint Event-related Potential – Functional MRI Analysis

2016 ◽  
Vol 16 (12) ◽  
pp. 135
Author(s):  
Jonathan Wynn ◽  
Amy Jimenez ◽  
William Horan ◽  
Junghee Lee ◽  
Gabrielle Pascual ◽  
...  
Keyword(s):  
Functional Mri ◽  
Event Related Potential ◽  
Real Contour ◽  
Joint Event

Too Many Trees to See the Forest: Performance, Event-related Potential, and Functional Magnetic Resonance Imaging Manifestations of Integrative Congenital Prosopagnosia

2007 ◽  
Vol 19 (1) ◽  
pp. 132-146 ◽  
Author(s):  
Shlomo Bentin ◽  
Joseph M. DeGutis ◽  
Mark D'Esposito ◽  
Lynn C. Robertson
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Event Related Potential ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Face Area ◽  
Congenital Prosopagnosia ◽  
Brain Correlates ◽  
Face Selectivity

Neuropsychological, event-related potential (ERP), and functional magnetic resonance imaging (fMRI) methods were combined to provide a comprehensive description of performance and neurobiological profiles for K.W., a case of congenital prosopagnosia. We demonstrate that K.W.'s visual perception is characterized by almost unprecedented inability to identify faces, a large bias toward local features, and an extreme deficit in global/configural processing that is not confined to faces. This pattern could be appropriately labeled congenital integrative prosopagnosia, and accounts for some, albeit not all, cases of face recognition impairments without identifiable brain lesions. Absence of face selectivity is evident in both biological markers of face processing, fMRI (the fusiform face area [FFA]), and ERPs (N170). Nevertheless, these two neural signatures probably manifest different perceptual mechanisms. Whereas the N170 is triggered by the occurrence of physiognomic stimuli in the visual field, the deficient face-selective fMRI activation in the caudal brain correlates with the severity of global processing deficits. This correlation suggests that the FFA might be associated with global/configural computation, a crucial part of face identification.

Functional MRI/Event-related potential study of sensory consonance and dissonance in musicians and nonmusicians

Neuroreport ◽  
2009 ◽  
Vol 20 (1) ◽  
pp. 87-92 ◽  
Author(s):  
Ludovico Minati ◽  
Cristina Rosazza ◽  
Ludovico DʼIncerti ◽  
Emanuela Pietrocini ◽  
Laura Valentini ◽  
...  
Keyword(s):  
Functional Mri ◽  
Event Related Potential ◽  
Potential Study ◽  
Sensory Consonance ◽  
Consonance And Dissonance

scholarly journals EPOC outside the shield: comparing the performance of a consumer-grade EEG device in shielded and unshielded environments

2020 ◽  
Author(s):  
Jordan Wehrman ◽  
Sidsel Sörensen ◽  
Peter de Lissa ◽  
Nicholas A. Badcock
Keyword(s):  
Low Cost ◽  
Event Related Potential ◽  
Human Face ◽  
Eeg Signals ◽  
N170 Amplitude ◽  
The Face ◽  
Research Grade ◽  
Current Article ◽  
Highly Correlated ◽  
Human Faces

AbstractLow-cost, portable electroencephalographic (EEG) headsets have become commercially available in the last 10 years. One such system, Emotiv’s EPOC, has been modified to allow event-related potential (ERP) research. Because of these innovations, EEG research may become more widely available in non-traditional settings. Although the EPOC has previously been shown to provide data comparable to research-grade equipment and has been used in real-world settings, how EPOC performs without the electrical shielding used in research-grade laboratories is yet to be systematically tested. In the current article we address this gap in the literature by asking participants to perform a simple EEG experiment in shielded and unshielded contexts. The experiment was the observation of human versus wristwatch faces which were either inverted or noninverted. This method elicited the face-sensitive N170 ERP.In both shielded and unshielded contexts, the N170 amplitude was larger when participants viewed human faces and peaked later when a human face was inverted. More importantly, Bayesian analysis showed no difference in the N170 measured in the shielded and unshielded contexts. Further, the signal recorded in both contexts was highly correlated. The EPOC appears to reliably record EEG signals without a purpose-built electrically-shielded room or laboratory-grade preamplifier.

Infrequent Events Transiently Activate Human Prefrontal and Parietal Cortex as Measured by Functional MRI

1997 ◽  
Vol 77 (3) ◽  
pp. 1630-1634 ◽  
Author(s):  
Gregory McCarthy ◽  
Marie Luby ◽  
John Gore ◽  
Patricia Goldman-Rakic
Keyword(s):  
Working Memory ◽  
Functional Mri ◽  
Parietal Cortex ◽  
Parietal Lobe ◽  
Neural System ◽  
Blood Oxygenation ◽  
Event Related Potential ◽  
Transient Event ◽  
Inferior Aspect ◽  
Oxygenation Level

McCarthy, Gregory, Marie Luby, John Gore, and Patricia Goldman-Rakic. Infrequent events transiently activate human prefrontal and parietal cortex as measured by functional MRI. J. Neurophysiol. 77: 1630–1634, 1997. P300 is an event-related potential elicited by infrequent target events whose amplitude is dependent on the context provided by the immediately preceding sequence of stimuli, suggesting its dependence on working memory. We employed magnetic resonance imaging sequences sensitive to blood oxygenation level to identify regional changes evoked by infrequent visual target stimuli presented in a task typically used to elicit P300. Targets evoked transient event-related activation bilaterally in the middle frontal gyrus, in the inferior parietal lobe, and near the inferior aspect of the posterior cingulate gyrus beginning within 1.5 s of target onset and peaking between 4.5 and 6 s. These regions have been identified in previous neuroimaging studies in humans, and in single-unit recordings in monkeys, as components of a neural system mediating working memory, which suggests that this system may be activated by the same events that evoke P300.

scholarly journals A multifunctional method (ERP and fMRI) of analysis on facial expression. Three pilot studies

2007 ◽  
Author(s):  
Galit Yovel
Keyword(s):  
Functional Mri ◽  
Face Processing ◽  
Neural Response ◽  
Event Related Potential ◽  
High Temporal Resolution ◽  
Neural Basis ◽  
The Face ◽  
Related Potentials ◽  
Face Stimuli ◽  
The Relationship

As social primates, one of the most important cognitive tasks we conduct, dozens of times a day, is to look at a face and extract the person's identity. During the last decade, the neural basis of face processing has been extensively investigated in humans with event-related potential (ERP) and functional MRI (fMRI). These two methods provide complementary information about the temporal and spatial aspects of the neural response, with ERPs allowing high temporal resolution of milliseconds but low spatial resolution of the neural generator and fMRI displaying a slow hemodynamic response but better spatial localization of the activated regions. Despite the extensive fMRI and ERP research of faces, only a few studies have assessed the relationship between the two methods and no study to date have collected simultaneous ERP and fMRI responses to face stimuli. In the current paper we will try to assess the spatial and temporal aspects of the neural response to faces by simultaneously collecting functional MRI and event-related potentials (ERP) to face stimuli. Our goals are twofold: 1) ERP and fMRI show a robust selective response to faces. In particular, two well-established face-specific phenomena, the RH superiority and the inversion effect are robustly found with both ERP and fMRI. Despite the extensive research of these effects with ERP and fMRI, it is still unknown to what extent their spatial (fMRI) and temporal (ERP) aspects are associated. In Study 1 we will employ an individual differences approach, to assess the relationship between these ERP and fMRI face-specific responses. 2) Face processing involves several stages starting from structural encoding of the face image through identity processing to storage for later retrieval. This representation undergoes several manipulations that take place at different time points and in different brain regions before the final percept is generated. By simultaneously recording ERP and fMRI we hope to gain a more comprehensive understanding of the timecourse that different brain areas participate in the generation of the face representation.

Sensory and Cognitive Components of Auditory Processing in Individuals With Tinnitus

2019 ◽  
Vol 28 (4) ◽  
pp. 834-842
Author(s):  
Harini Vasudevan ◽  
Hari Prakash Palaniswamy ◽  
Ramaswamy Balakrishnan
Keyword(s):  
Selective Attention ◽  
Auditory Processing ◽  
Function Analysis ◽  
Event Related Potential ◽  
Oscillatory Activity ◽  
Default Mode ◽  
Auditory Selective Attention ◽  
Cognitive Components ◽  
Mode Function ◽  
Related Potentials

Purpose The main purpose of the study is to explore the auditory selective attention abilities (using event-related potentials) and the neuronal oscillatory activity in the default mode network sites (using electroencephalogram [EEG]) in individuals with tinnitus. Method Auditory selective attention was measured using P300, and the resting state EEG was assessed using the default mode function analysis. Ten individuals with continuous and bothersome tinnitus along with 10 age- and gender-matched control participants underwent event-related potential testing and 5 min of EEG recording (at wakeful rest). Results Individuals with tinnitus were observed to have larger N1 and P3 amplitudes along with prolonged P3 latency. The default mode function analysis revealed no significant oscillatory differences between the groups. Conclusion The current study shows changes in both the early sensory and late cognitive components of auditory processing. The change in the P3 component is suggestive of selective auditory attention deficit, and the sensory component (N1) suggests an altered bottom-up processing in individuals with tinnitus.

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