Showing papers in "International Journal of Psychophysiology in 2000"

TL;DR: It is proposed that large scale integration is performed by synchronization among neurons and neuronal assemblies evolving in different frequency ranges, specifically involved in processing of internal mental context, i.e. for top-down processing.

TL;DR: This review will provide the reader with a brief outline of the basic properties of inhibition-based oscillations in the CNS by combining research from laboratory models, large-scale neuronal network simulations, and mathematical analysis.

TL;DR: It is concluded that vagal modulation of heart period appears to be sensitive to the recent experience of persistent emotional stress, regardless of a person's level of physical fitness and disposition toward experiencing anxiety.

TL;DR: Satisfying social relationships were associated with more positive outlooks on life, more secure attachments and interactions with others, more autonomic activation when confronting acute psychological challenges, and more efficient restorative behaviors.

TL;DR: P300 amplitude and latency variability was found to be highly comparable and sometimes superior to routinely employed biomedical assays and how to control inter-group ERP variability and the application of normative P300 data in clinical settings is discussed.

TL;DR: This review argues 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 relation with memory and integrative functions.

TL;DR: It seems likely that attentional processes are under tight control by brain systems which mediate the fight-or-flight response, given the increase in alpha-amylase and the correlation between attention and CORT after stress.

TL;DR: The relative strengths and weaknesses of PET and fMRI techniques for studying olfaction are reviewed and a pixelwise correlational analysis of PET data is presented in order to clarify the relationship between blood flow in the medial temporal lobes and psychoperceptual variables.

TL;DR: Event-related potentials were recorded while subjects performed a memory retrieval task requiring old/new judgements to visually presented old and new words, and the magnitude of the parietal old/ new effects co-varied with the number of accurate source judgements.

TL;DR: Individual differences in parasympathetic cardiac control measured at rest were able to discriminate cardiac response patterns during film viewing, and support the hypothesis of differential autonomic response patterns to specifically unpleasant material.

TL;DR: Experimental evidence is presented supporting the hypothesis that the functional role of gamma oscillations is not restricted to object representation established through bottom-up mechanisms of feature binding, but also extends to the cases of internally driven representations and to the maintenance of information in memory.

TL;DR: Results of the present experiments in combination with other studies presented in this volume are supportive for the notion that induced gamma band activity in the human EEG is closely related to visual information processing and attentional perceptual mechanisms.

TL;DR: Results from a complex single-trial motor paradigm study testing the hypothesis, that premotor potentials can be examined by functional techniques relying on the vascular response are presented, and a rough mapping of this metabolic response over the motion-sensitive extrastriate visual area is demonstrated.

TL;DR: The present paper will discuss the functional properties of those sensorimotor neurons located in the ventral part of the monkey premotor cortex and proposes that the apparent parodox stemming from the coexistence within the same neuron of motor and sensory properties can be solved by postulating that the motor system internally represents them in terms of 'motor ideas'.

TL;DR: It is recommended that researchers standardize baseline procedures by showing a relaxing video before administering tasks for the assessment of cardiovascular reactivity.

TL;DR: The reasons of the wide applicability of the mismatch negativity (MMN) generated by the brain's automatic response to change in auditory stimulation are discussed.

TL;DR: Results suggest intact early discrimination but abnormal late appraisal of affective content in depression, which may arise from selective inhibition of right parietal regions integral for perceiving and evaluating emotional stimuli.

TL;DR: A link between olfactory and emotional processing has been confirmed by the finding that the P3 elicited by visual stimuli shows similar valence effects, and it is suggested that all components found so far strongly depend on the psychological state of the individual.

TL;DR: The EEG changes are consistent with the notion of overall reduction of attention during the later laps and the replay task and indicate the potential of such measures for complex motor behaviour.

TL;DR: Psychological and immunological stress effects may be dissociated, the latter considerably exceeding the stress period and a closer look at the temporal dynamics of stress-induced immune alterations might increase the understanding of psychoimmuno relationships.

TL;DR: Normative data across the human life span for OERPs with a given set of parameters will be useful in research on olfactory function and in clinical assessment of OERP functional status.

TL;DR: Examination of evoked and induced responses in event-related fields and gamma activity in the magnetoencephalogram (MEG) during a visual classification task suggests that early evoked Gamma activity in response to visual stimuli is affected by the targetness of a stimulus and the need to discriminate between the features of a stimuli.

TL;DR: It is shown that social support buffers the impact of episodic stress on cardiovascular activity under naturalistic conditions during the working day, corroborate laboratory studies, and is shown effectively to discriminate between blood pressure readings taken in the seated and standing positions in terms of energy expenditure.

TL;DR: It seems to be possible to specifically describe how and where the processing of irritation takes place, how it may interact with olfactory mediated sensations, and how it is modulated, e.g. by environmental influences or analgesic drugs.

TL;DR: The study showed that it is unlikely that individuals solve well- and ill-defined problems by employing similar cognitive strategies, and hint to a functional independence of the two alpha bands.

TL;DR: Methods and problems associated with the collection of on-going EEG, chemosensory event-related potentials, and contingent negative variation data are discussed in depth as is the use of odors as modulators of brain potentials produced by other senses.

TL;DR: Female rats were repeatedly stressed for 10 periods of 15 min by the presence of a cat, at the 10th or the 19th gestational day and their long-term memory was altered and they exhibited an aversive behavior relative to wide areas.

TL;DR: Peak-to-peak amplitudes of the N1P2 and N2P3 components in the target ERPs from a fixed interstimulus interval auditory oddball paradigm were investigated to confirm the intimate relationship between central nervous system activation and the ERP resulting from stimulus presentation.

TL;DR: These findings suggest that neuronal resource allocation is greatest for attended stimuli and that a painful stimulus demands neuronal resources even when ignored.

TL;DR: Baroreflex sensitivity was strongly positively correlated with mean successive difference and negatively correlated with heart rate for all participant groups; barore Flex sensitivity was negatively correlated for children, males, and Blacks; and increased problems with impulse control was associated with decreased cardiac vagal control.