Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Maternal exposure to influenza and cold in pregnancy and electrodermal activity in offspring: The Mauritius study (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 34 (1997), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Data are in conflict concerning whether a mother's exposure to influenza in pregnancy gives rise to an increased probability that her offspring will develop schizophrenia. In Northern Hemisphere studies, exposure to influenza and cold tend to be confounded. The present study, carried out in Mauritius, examines the effect of maternal exposure to the virus and separately to cold on aspects of electrodermal activity that have been shown in other studies to be related to schizophrenia. The findings are that maternal exposure to influenza in the second and third trimesters gives rise to children who at the age of 3 years show electrodermal hyperresponsivity, whereas exposure to cold in the same periods gives rise to children who tend to be hyporesponsive. In both instances, exposure tends to produce lower levels of tonic activity than in those not exposed to the virus or to cold.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1997.tb02386.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    For Distinguished Contributions to Psychophysiology: (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 25 (1988), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1988.tb01883.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Enhanced P3 Evoked Potentials and Longer P3 Recovery Times in Psychopaths (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 25 (1988), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: A recent study by Raine and Venables (1987) reported increased P3 amplitudes in antisocial adolescents, a replicable result indicating enhanced processing of task-relevant events. The present study assesses whether adult psychopaths similarly show enhanced P3 amplitudes; latency of P3 recovery to baseline was also measured to assess Jutai et al.'s (1987) finding of sustained late positivity in psychopaths. EPs were measured at T3, T4, P3, and P4 to targets and nontargets during a continuous performance task in 14 psychopathic and 14 nonpsychopathic top-security prisoners. Psychopaths showed larger P3 amplitudes to targets relative to nontargets at parietal but not temporal sites, and larger P3 recovery times. Psychopaths also scored higher on WAIS subtests sensitive to parietal lobe functioning but not on non-parietal subtests. No laterality effects were uncovered to support a left hemisphere dysfunction theory of psychopathy. It is argued that this evidence for proficient information-processing on parietal-related tasks may underlie clinical reports of enhanced short-term attentional ability in psychopaths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1988.tb00954.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Cortical Augmenting-Reducing — Modality Specific? (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 18 (1981), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: The assumption that cortical augmenting-reducing is independent of stimulus modality was tested by presenting both auditory and visual stimuli to 42 subjects. Cross-modal correlations for P1N1 and N1P2 slope measures were negligible and nonsignificant. They remained insignificant using a measure independent of overall responsivity, after exclusion of “inconsistent” slope values, after equating for relative stimulus intensity, and after data transformations. No evidence was found for overall reducing in the auditory modality, although “paradoxical” reducing was observed over low intensity levels. Slopes derived from this reducing range did not correlate with visual slopes. Visual reducing was not found to be an artifact of selective EP latency jitter or scatter of the data points, but was found to correlate with confidence ratings of peak-trough identification. These results suggest that cortical reducing is modality-specific and is not mediated by a generalized, central inhibitory mechanism but by independent, sensory-specific pathways. Implications were drawn for both the neuroanatomical basis of cortical augmenting-reducing and its application in psychopathology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1981.tb01847.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Maternal exposure to influenza in pregnancy and electrodermal activity in offspring: A further study from Mauritius (1998)
    Oxford, UK : Blackwell Publishing
    Psychophysiology 35 (1998), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: This study examined the effect of mothers' exposure to the 1957 A2/Singapore influenza virus in the first, second, and third trimesters of pregnancy on the electrodermal activity of their 15-year-old offspring. The epidemic occurred during cold months of the year. The results show that maternal viral (and cold) exposure during all trimesters of pregnancy produced a lower frequency of nonspecific electrodermal responses and diminished responsivity to 75-db and 90-db tones as compared with the offspring of mothers who were not exposed. However, there was a critical effect of second trimester exposure as indicated by an increase in frequency of nonresponses to orienting tones. The findings are compared with those from an earlier study from Mauritius involving 3-year-old children in which the effects of exposure to the 1968 A2/Hong Kong virus were examined and in which the effect of cold exposure could be examined separately because viral exposure occurred during the hot months.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1469-8986.3540438
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    A Major Effect of Recording Site on Measurement of Electrodermal Activity (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 29 (1992), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Although the medial phalanx has been recommended as the preferred site for recording skin conductance activity, a review of articles published in Psychophysiology indicates that a large minority (34%) of studies employ the distal phalanx. Informal observations also suggest that the distal site may be more reactive than the medial site. This study formally tests this observation by recording skin conductance from both medial and distal phalanges. Twenty-four right-handed subjects (12 male, 12 female) were exposed to a series of 10 orienting and defensive stimuli. Electrodes were placed on the fore and middle fingers of each hand, with distal sites used on one hand and medial sites on the other for each subject. Skin conductance amplitudes were 3.5 times larger at distal than medial sites (p〈.002), while skin conductance levels were 2.08 times larger at distal sites (p〈.0005). A significant Site × Stimulus interaction (p〈.025) indicated that the distal site was more sensitive to habituation over trials and to increases in skin conductance amplitudes with increasing stimulus intensity than the medial site. On the basis of these findings it is recommended that distal sites be used in preference to medial sites in the recording of skin conductance activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1992.tb01693.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Relationships Between N1, P300, and Contingent Negative Variation Recorded at Age 15 and Criminal Behavior at Age 24 (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 27 (1990), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Recent event-related potential (ERP) studies indicate that antisocial and psychopathic behavior is in some circumstances characterized by heightened attentional processes. This prospective study assesses whether ERP measures of attention recorded in adolescence are capable of predicting criminality status in adulthood. N1, P300, and contingent negative variation (CNV) were recorded during a CNV paradigm in a representative sample of 101 male schoolchildren at age 15, and related to criminality status at age 24. Criminals-to-be were characterized by larger N1 amplitudes and faster P300 latencies to the warning stimulus. Psychopathic personality within the criminal group was associated with larger N1 and CNV amplitudes. A discriminant function analysis using N1 and P300 measures correctly classified 74% of cases. It is concluded that enhanced early attentional processing may be of etiological significance in the development of criminality and that ERP measures may be of value in the early prediction of criminal behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1990.tb01978.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Contingent Negative Variation, P3 Evoked Potentials, and Antisocial Behavior (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 24 (1987), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: While initial investigations have found significantly lower contingent negative variation (CNV) amplitudes in adult, institutionalised antisocial groups, others have found either no group differences or significantly higher amplitudes. This study attempts to circumvent some methodological and conceptual problems in previous stud its by assessing CNV in a classical forewarned reaction time experiment in two samples of non-institutionalised normal adolescents where behavioral ratings and self-report measures were used to define Antisocial and Pro social groups. A trend toward higher P3 amplitudes to the warning stimulus (SI) observed in a previous study was also investigated by recording evoked potentials to SI. Results indicated no significant group differences in CNV and Nl amplitudes, but a significantly larger P3 amplitude in the Antisocial group in both subject samples. This latter result was viewed as consistent with Jutai and Hare's (1983) finding that psychopathic anti socials have a heightened capacity to attend to events of immediate interest.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1987.tb00277.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Publication Recommendations for Electrodermal Measurements (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 18 (1981), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: The paper recommends an acceptable methodology for recording electrodermal activity which reflects a consensus of experts in the field. These recommendations are presented with a minimum of technical discussion in order to maximize their usefulness to investigators who are not specialists in this area.For most purposes, skin conductance (SC) is to be preferred over skin potential (SP). It is recommended that SC be recorded from palmar sites with silver-silver chloride electrodes and an electrode paste consisting of a sodium chloride electrolyte in a neutral ointment cream medium. The area of contact with the skin should be controlled and time allowed for stabilization of the skin-electrode paste interface. Electrode bias potentials and polarization should be monitored during use. Signal conditioning is achieved by the application of a constant 0.5 volt across the electrodes and measurement of the resultant current flow by amplifying the voltage developed across a small resistor in series with the skin. The measurement of the amplitude-or even the detection-of small responses requires some form of tonic level control, permitting an adjustment of the tonic level. A circuit is provided for signal conditioning and tonic level control.SP can be recorded with the same electrodes and electrode paste, unless the results are to be related to the British work on SP level, in which case the original potassium chloride electrolyte in an agar medium should be used. SP recordings require that one of the electrodes be placed over an inactive reference site, preferably over the ulnar bone near the elbow. No external voltage is applied, but some form of tonic level control may be needed. Electrodes need to be checked for bias potentials but not polarization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1981.tb03024.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    CHARACTERISTICS OF PALMAR SKIN POTENTIAL AND CONDUCTANCE IN RELAXED HUMAN SUBJECTS (1971)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 8 (1971), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: An investigation of mechanisms generating palmar skin potential level (SPL) was undertaken from relaxed subjects in a non-arousing environment. In these circumstances it was possible to obtain recordings where there were no skin potential responses (SPRs). At such times of quiescence, SPLs, recorded with 0.5% KCl as the external electrolyte medium, had characteristics which differed from SPLs recorded when there were SPRs. The potentials recorded at the beginning of these periods of quiescence were designated “basal” skin potential levels (BSPLs).BSPLs were demonstrated in other than optimal conditions for achieving basal state, i.e., with non-habituated subjects, and with subjects carrying out an undemanding cognitive task; the relevance of these findings to the use of SPL as an index of arousal in unstimulating conditions is discussed.An interpretation of BSPL phenomena is possible in terms of a relationship between electrode electrolyte and individual values of body fluid potassium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1971.tb00485.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...