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1

Subjective mood estimation co-varies with spectral power EEG characteristics

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Wyczesany M., Kaiser J., Coenen A. M. L.
Acta Neurobiologiae Experimentalis
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2008
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tom 68
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nr 2
Co-variation between subjectively estimated mood/activation and EEG characteristics, based on spectral power parameters, was investigated. Subjective estimation of mood was made by using Thayer’s Activation-Deactivation Adjective Checklist, which yielded two dimensions: Energy-Tiredness (with Energy pole having positive valence connotation) and Tension-Calmness (negative connotation for Tension). A within-subject design with two sessions of EEG recording immediately followed by mood assessment was applied. These were separated by a cognitive task, introduced in order to modify the subjects’ mood. The correlations between changes in mood estimation and changes in EEG spectral power parameters were calculated. Both ADACL dimensions co-varied with EEG in a specific way according to frequency and localization. Subjective estimation of Energy correlated negatively with alpha1 and, surprisingly, positively with delta, theta1 as well as theta2 relative power. Estimation of Tension correlated positively with theta1 and beta1, and negatively with alpha2 relative power. Presented results suggest that the adjective description of mood has objectively-measurable brain correlates in the EEG.
2

Cortical lateralization patterns related to self-estimation of emotional state

100%
Wyczesany M., Kaiser J., Barry R. J.
Acta Neurobiologiae Experimentalis
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2009
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tom 69
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nr 4
The relationships between subjectively-reported emotional state and hemispheric laterality were investigated. Participants’ emotional state was modified using emotional slides. Self-estimation of Energy Arousal and Hedonic Tone (positive valence) as well as Tense Arousal (negative valence) was derived from the Activation-Deactivation Adjective Checklist and the UWIST Mood Adjective Checklist. Energy arousal was found to be associated with right frontal dominance in the alpha2 (10–12 Hz) band, together with left frontal dominance in the beta2 (16–24 Hz) band. It was also related to left alpha2 dominance in the central and centro-parietal cortex. The effects for the Hedonic Tone scale were limited to a frontal beta2 effect. Surprisingly, no effects of state estimates from the tension scales were observed. It can be concluded that selected qualities of subjective emotional state measured by adjective lists can be related in specific ways to hemispheric laterality, as measured by EEG methods.
3

The P3 produced by auditory stimuli presented in a passive and active condition: Modulation by visual stimuli

100%
Wronka E., Kuniecki M., Kaiser J., Coenen A. M. L.
Acta Neurobiologiae Experimentalis
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2007
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tom 67
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nr 2
The aim of this study was to investigate how the processing of auditory stimuli is affected by the simultaneous presentation of visual stimuli. This was approached in an active and passive condition, during which a P3 was elicited in the human EEG by single auditory stimuli. Subjects were presented tones, either alone or accompanied by the simultaneous exposition of pictures. There were two different sessions. In the first, the presented tones demanded no further cognitive activity from the subjects (passive or ""ignore"" session), while in the second session subjects were instructed to count the tones (active or "count" session). The central question was whether inter-modal influences of visual stimulation in the active condition would modulate the auditory P3 in the same way as in the passive condition. Brain responses in the ignore session revealed only a small P3-like component over the parietal and frontal cortex, however, when the auditory stimuli co-occurred with the visual stimuli, an increased frontal activity in the window of 300-500 ms was observed. This could be interpreted as the reflection of a more intensive involuntary attention shift, provoked by the preceding visual stimulation. Moreover, it was found that cognitive load caused by the count instruction, resulted in an evident P3, with maximal amplitude over parietal locations. This effect was smaller when auditory stimuli were presented on the visual background. These findings might support the thesis that available resources were assigned to the analysis of visual stimulus, and thus were not available to analyze the subsequent auditory stimuli. This reduction in allocation of resources for attention was restricted to the active condition only, when the matching of a template with incoming information results in a distinct P3 component. It is discussed whether the putative source of this effect is a change in the activity of the frontal cortex.
4

The auditory P3 from passive and active three-stimulus oddball paradigm

100%
Wronka E., Kaiser J., Coenen A. M. L.
Acta Neurobiologiae Experimentalis
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2008
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tom 68
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nr 3
The aim of this study was the comparison of basic characteristics of the P3 subcomponents elicited in passive and active versions of the auditory oddball paradigm. A 3-stimulus oddball paradigm was employed in which subjects were presented with random sequence of tones while they performed a discrimination task in visual modality with no response to the tone (passive task) or responded to an infrequently occurring target stimulus inserted into sequence of frequent standard and rare non-target stimuli (active task). Results show that the magnitude of the frontal P3 response is determined by the relative perceptual distinctiveness among stimuli. The amplitude of frontal component is larger for the stimuli more deviated from the standard in both passive and active tasks. In all cases however, a maximum over central or fronto-central scalp regions was demonstrated. Moreover, amplitude of this component was influenced by the strength of attentional focus – a significantly larger response was obtained in the active session than in its passive counterpart. The apparent parietal P3 responses were obtained only in the active condition. The amplitude of this component is larger for the target than the non-target across all electrode sites, but both demonstrated a parietal maxima. This findings suggest that generation of early frontal P3 could be related to alerting activity of frontal cortex irrespective of stimulus context, while generation of later parietal P3 is related to temporo-parietal network activated when neuronal model of perceived stimulation and attentional trace are comparing.
5

Neural generators of the auditory evoked potential components P3a and P3b

100%
Wronka E., Kaiser J., Coenen A. M. L.
Acta Neurobiologiae Experimentalis
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2012
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tom 72
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nr 1
The aim of the present study was to define the scalp topography of the two subcomponents of the P3 component of the auditory evoked potential elicited in a three-stimulus oddball paradigm and to identify their cortical generators using the standardized low resolution electromagnetic tomography (sLORETA). Subjects were presented with a random sequence of auditory stimuli and instructed to respond to an infrequently occurring target stimulus inserted into a sequence of frequent standard and rare non-target stimuli. Results show that the magnitude of the frontal P3a is determined by the relative physical difference among stimuli, as it was larger for the stimulus more deviant from the standard. Major neural generators of the P3a were localized within frontal cortex and anterior cingulate gyrus. In contrast to this, the P3b, showing maximal amplitude at parietal locations, was larger for stimuli demanding a response than for the rare non-target. Major sources of the P3b included the superior parietal lobule and the posterior part of the cingulate gyrus. Our findings are in line with the hypothesis that P3a is related to alerting activity during the initial allocation of attention, while P3b is related to activation of a posterior network when the neuronal model of perceived stimulation is compared with the attentional trace.
6

Evoked cardiac response as a correlate of cognitive processing in the cases of central motor system impairment

100%
Kaiser J., Wronka E., Tomik B., Szkudlik A.
Acta Neurobiologiae Experimentalis
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1997
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tom 57
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nr 5
7

Evoked cordiac response (ECR) as a function of interaction between processing load and reaction time (RT) individual differences

100%
Kaiser J., Beauvale A., Bener J.
Acta Neurobiologiae Experimentalis
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1995
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tom 55
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nr 5
8

Evoked cardiac response components in cognitive processing: differential effects of amyotrophic lateral sclerosis

100%
Kaiser J., Wronka E., Barry R. J., Szczudlik A.
Acta Neurobiologiae Experimentalis
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1999
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tom 59
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nr 4
9

The evoked cardiac response as a function of cognitive load in subjects differing on the individual difference variable of reaction time

100%
Kaiser J., Beauvale A., Bener J.
Acta Neurobiologiae Experimentalis
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1996
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tom 56
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nr 1
10

Correlation between long latency evoked potentials from amygdala and evoked cardiac response to fear conditioned stimulus in rats

100%
Kuniecki M., Coenen A. M. L., Kaiser J.
Acta Neurobiologiae Experimentalis
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2002
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tom 62
|
nr 2
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