Long latency event-related potentials in rats: response of amygdala, nucleus accumbens, dorsal hippocampus and frontal cortex to changes in reward characteristics of conditioned stimuli

1998 ◽  
Vol 780 (1) ◽  
pp. 138-142 ◽  
Author(s):  
Cindy L Ehlers ◽  
Christine Somes ◽  
Alfred L Lopez ◽  
Patricia Robledo
Keyword(s):  
Nucleus Accumbens ◽  
Frontal Cortex ◽  
Dorsal Hippocampus ◽  
Event Related Potentials ◽  
Conditioned Stimuli ◽  
Long Latency ◽  
Related Potentials ◽  
Reward Characteristics

scholarly journals Eliciting and Recording Event Related Potentials (ERPs) in Behaviourally Unresponsive Populations: A Retrospective Commentary on Critical Factors

2021 ◽  
Vol 11 (7) ◽  
pp. 835
Author(s):  
Alexander Rokos ◽  
Richard Mah ◽  
Rober Boshra ◽  
Amabilis Harrison ◽  
Tsee Leng Choy ◽  
...  
Keyword(s):  
Event Related Potentials ◽  
Stimulus Presentation ◽  
Event Related Potential ◽  
Critical Factors ◽  
Healthy Elderly ◽  
States Of Consciousness ◽  
Long Latency ◽  
Eeg Data ◽  
Related Potentials ◽  
The Relationship

A consistent limitation when designing event-related potential paradigms and interpreting results is a lack of consideration of the multivariate factors that affect their elicitation and detection in behaviorally unresponsive individuals. This paper provides a retrospective commentary on three factors that influence the presence and morphology of long-latency event-related potentials—the P3b and N400. We analyze event-related potentials derived from electroencephalographic (EEG) data collected from small groups of healthy youth and healthy elderly to illustrate the effect of paradigm strength and subject age; we analyze ERPs collected from an individual with severe traumatic brain injury to illustrate the effect of stimulus presentation speed. Based on these critical factors, we support that: (1) the strongest paradigms should be used to elicit event-related potentials in unresponsive populations; (2) interpretation of event-related potential results should account for participant age; and (3) speed of stimulus presentation should be slower in unresponsive individuals. The application of these practices when eliciting and recording event-related potentials in unresponsive individuals will help to minimize result interpretation ambiguity, increase confidence in conclusions, and advance the understanding of the relationship between long-latency event-related potentials and states of consciousness.

Long latency event-related potentials (P300) in gifted children

1993 ◽  
Vol 15 (3) ◽  
pp. 173-177 ◽  
Author(s):  
Florence Martin ◽  
Eric Delpont ◽  
Georges Suisse ◽  
Christian Richelme ◽  
Claude Dolisi
Keyword(s):  
Event Related Potentials ◽  
Gifted Children ◽  
Long Latency ◽  
Related Potentials

scholarly journals Accuracy in Archery Shooting is linked to the Amplitude of the ERP N1 to the Snap of Clicker

2021 ◽  
Vol 10 (1) ◽  
pp. 37-44
Author(s):  
Hayri Ertan ◽  
◽  
Suha Yagcioglu ◽  
Alpaslan Yılmaz ◽  
Pekcan Ungan ◽  
...  
Keyword(s):  
Confidence Intervals ◽  
Event Related Potentials ◽  
Operational Definition ◽  
Brain Potentials ◽  
Long Latency ◽  
Eeg Data ◽  
Continuous Eeg ◽  
Related Potentials ◽  
High Level ◽  
The Brain

An archer requires a well-balanced and highly reproducible release of the bowstring to attain high scores in competition. Recurve archers use a mechanical device called the “clicker” to check the draw length. The fall of the clicker that generates an auditory stimulus should evoke a response in the brain. The purpose of this study is to evaluate the event-related potentials during archery shooting as a response to the fall of the clicker. Fifteen high-level archers participated. An electro cap was placed on the archers’ scalps, and continuous EEG activity was recorded (digitized at 1000 Hz) and stored for off-line analysis. The EEG data were epoched beginning 200 ms before and lasting 800 ms after stimulus marker signals. An operational definition has been developed for classifying hits corresponding to hit and/or miss areas. The hit area enlarged gradually starting from the centre of the target (yellow: 10) to blue (6 score) by creating ten hit area indexes. It is found that the snap of the clicker during archery shooting evokes N1–P2 components of long-latency evoked brain potentials. N1 amplitudes are significantly higher in hit area than that of miss areas for the 2nd and 4th indexes with 95% confidence intervals and 90% confidence intervals for the 1st and 3rd indexes with 90% confidence intervals. We conclude that the fall of the clicker in archery shooting elicits an N1 response with higher amplitude. Although evoked potential amplitudes were higher in successful shots, their latencies were not significantly different from the unsuccessful ones.

Working Memory in Schizophrenia as Revealed by Event-Related Potentials

2001 ◽  
Vol 12 (1) ◽  
pp. 26-31 ◽  
Author(s):  
Andreas Brand ◽  
Helmut Hildebrandt ◽  
Ahmet Cabuk ◽  
Jörg Zimmermann ◽  
Canan Basar-Eroglu
Keyword(s):  
Working Memory ◽  
Frontal Cortex ◽  
Healthy Subjects ◽  
Negative Symptoms ◽  
Event Related Potentials ◽  
Temporal Sequence ◽  
Control Task ◽  
Schizophrenic Patients ◽  
Related Potentials

Abstract: In this study, we compared working memory (WM) functions for simple actions of healthy subjects and schizophrenic patients by means of behavioral and ERP measures. Healthy subjects showed a large frontal N2 amplitude in the hard WM task with updating demands of temporal sequence, but not in the easy WM and the control task. Schizophrenic patients had large frontal N2 amplitudes in all tasks without difference indicating that the patients had to activate the frontal cortex in tasks in which healthy subjects use automatized routines which do not involve the frontal cortex. Strong negative symptoms in schizophrenic patients were associated with small N2 amplitudes thus supporting the hypothesis of joint causes of cognitive and psychopathological features.

Visual evoked potentials and long latency event-related potentials in chronic renal failure

Neurology ◽  
1983 ◽  
Vol 33 (9) ◽  
pp. 1219-1219 ◽  
Author(s):  
S. N. Cohen ◽  
K. Syndulko ◽  
B. Rever ◽  
J. Kraut ◽  
J. Coburn ◽  
...  
Keyword(s):  
Renal Failure ◽  
Chronic Renal Failure ◽  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Event Related Potentials ◽  
Long Latency ◽  
Related Potentials ◽  
Visual Evoked
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