Showing papers in "International Journal of Psychophysiology in 2001"

TL;DR: From this phylogenetic orientation, the polyvagal theory proposes a biological basis for social behavior and an intervention strategy to enhance positive social behavior.

TL;DR: It is argued that selectively distributed delta, theta, alpha and gamma oscillatory systems act as resonant communication networks through large populations of neurons and might play a major role in functional communication in the brain in relation to memory and integrative functions.

TL;DR: Induced oscillations in the beta band (13-35 Hz, beta ERS) were found in sensorimotor areas after voluntary movement and after somatosensory stimulation, and may be interpreted as a state of 'inhibition' of neural circuitry in the primary motor cortex.

TL;DR: The paper shows that a subcortical input from basal ganglia, and in the case of the RP also from the cerebellum, is a necessary condition for their emergence and suggested that the reticular nucleus of the thalamus plays a pivotal role in anticipatory attention.

TL;DR: It is concluded that intensity aspects (more than timing aspects) of the P200-related attentional processes are particularly involved in the negativity bias.

TL;DR: Assessment of whether individuals mimic and show emotional contagion in response to relatively weak and idiosyncratic dynamic facial expressions of emotions similar to those encountered in everyday life found evidence for mimicry, and evidence for emotional contagions of happiness and sadness.

TL;DR: There was no beneficial effect of fluid ingestion on the cognitive variables, however, long-term memory retrieval was impaired in both control and dehydration situations, whereas there was no decrement in performance in the fluid ingestion condition.

TL;DR: Brain event-related potential (ERP) evidence for differential processing of visually presented pleasant and unpleasant affectively valent words (mood adjectives) for both supraliminal and subliminal stimulus durations is provided.

TL;DR: The hypothesis that this basic neurophysiological mechanism can account for the general observation that enhanced attention given to a certain stimulus (the focus) is coupled to inhibition of attention to other stimuli (the surround) is formed.

TL;DR: The most intriguing questions however, relate to what underpins the reduced MMN to duration increments in schizophrenia and therefore, what it reveals about the nature of the auditory system deficit in this disorder.

TL;DR: The wavelet analysis underlines and extends the expression that alpha-, theta, delta-, delta-, and gamma-responses described in this report are the most important brain responses related to psychophysiological functions.

TL;DR: It is suggested that monitoring patterns of physiological variables may index dynamically changing inner experiences during meditation practice to allow a more precise investigation into the nature of meditation experiences and a more accurate comparison of meditation states with other eyes-closed conditions.

TL;DR: The present paper provides three interwoven or interrelated approaches: the dependence of frontal theta response from the spontaneous activity will be pointed out, and it will be shown that complex stimulations such as bimodal stimulation enhances the theTA response.

TL;DR: The results of this study suggest that speech perception as measured on an early, pre-attentive level plays a major role in dyslexia not only in children but also in adults.

TL;DR: The comparative wavelet analysis presented in details by Demiralp et al. (1999), Ademoglu (1995) and by Başar et al (2001) will be applied to oddball P300 results, and results obtained basically confirm those obtained by using adaptive digital filtering.

TL;DR: Experimental evidence suggests a functional significance of EEG alpha rhythms, which may have functional correlates in primary sensory processing and preparatory processes and is in accordance with the view that spontaneous and induced EEGalpha rhythms have quasi-deterministic properties.

TL;DR: This paper suggests a way to integrate different parameters into one index and results obtained by a newly developed index, which was proposed to characterize task specific responses and individual differences in response patterns to mental tasks.

TL;DR: The steady state visually evoked potential (SSVEP) elicited by a diffuse 13-Hz visual flicker was recorded from 64 scalp sites in 30 subjects performing a low and high demand version of an object working memory task and changes in SSVEP amplitude and latency in terms of changes in the behavior of cortico-cortico and thalamo- cortico loops that utilize cortical layer I are discussed.

TL;DR: This review scans across the cultural diversity of pain expression and modulation in man and focuses on methods of studying the brain in experimental and clinical pain, the cohesive results of brain mapping and neuroimaging of noxious perception, the implication of pain research in understanding human consciousness and the relevance to clinical care.

TL;DR: Eyeblink variables were investigated while subjects performed a guilty knowledge test and a dual modality attention task and it was suggested that eye blinks could be related to the selective attention and that eyeblinks could provide an additional index for the detection of deception.

TL;DR: Men and women did not differ in trait anxiety, hostility/aggressiveness, or in the appraisal of the task, which were evaluated with the trait version of the State-Trait Anxiety Inventory (STAI-T), the Buss and Durkee Hostility Inventory (BDHI), and a self-report elaborated by ourselves.

TL;DR: The results agree with reports on brain activity shifted to the right during negative compared with positive emotions, and support the role of beta-2 EEG frequency in emotional states.

TL;DR: The results indicate to varying degrees that preceding the presentation of the KR stimuli, ERD is present over the sensory cortex, which corresponds to the modality of theKR stimulus, which supports the notion that a thalamocortical gating mechanism forms the neurophysiological basis of anticipatory attention.

TL;DR: Different measures inevitably are differently sensitive to sleepiness fluctuations; the amount of prior sleep is strongly relevant in quantifying sleepiness levels; subjective and behavioral measures show a higher level of vulnerability to external and motivational factors.

TL;DR: It was observed that the pre-stimulus EEG baseline variability exceeded that of the negative peak (NEG) following P300, i.e. the peak to which the peak-peak index refers P300 for computation, and that the base-peak measurement of P300 is uncorrelated with NEG.

TL;DR: Pre-shot electrodermal levels for the expert shooters were lower for the best compared with the worst shots, and the duration of the pre-shot cardiac deceleration was longer and more systematic for best than for worst shots.

TL;DR: It is concluded that the fear-induced Stimulus-Preceding Negativity is a manifestation of affective anticipation.

TL;DR: Evidence is provided that physiological compliance among team members may benefit team performance and an objective means to guide the ergonomic design of complex sociotechnical systems requiring a high degree of team proficiency is needed.

TL;DR: The results interpreted in the framework of capacity theory indicate high demand on processing resources already during separate performance of both tasks Gauge or Math, and during simultaneous performance the workload on average exceeded the limits of processing capacity.

TL;DR: The 'universal' character of the P300-delta response demonstrated in this report may open new avenues for the understanding of functional ERP components.