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Volume 21 (2003)
- Issue 3 Pages 205-
- Issue 2 Pages 61-
- Issue 1 Pages 1-
Volume 21, Issue 3
Displaying 1-5 of 5 articles from this issue
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MASUD ISHIDA2003 Volume 21 Issue 3 Pages 205-216
Published: December 31, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSThe present study examined the effects of predictability and controllability of aversive shocks on cognitive coping strategy using an N1 wave of auditory event-related brain potentials and a high-frequency component (0.2-0.3 Hz; HF) of heart rate variability. Subjects were divided into three groups : a predictable-controllable (P-C) group (n=16), a predictable-uncontrollable (P-UC) group (n=16), and an unpredictable-uncontrollable (UP-UC) group (n=14). For the P-C and P-UC groups, one of two tones served as a relevant tone to aversive shocks and the other as an irrelevant tone, whereas both tones served as irrelevant stimuli for the UP-UC group. Subjective ratings (on a 9-point scale) of arousal and affective valence were obtained for the aversive period. In the aversive situation, the P-C group showed higher N1 amplitudes to relevant and irrelevant tones and higher arousal ratings than did the P-UC and UP-UC groups. On the other hand, the UP-UC group showed lower N1 amplitude to the irrelevant tone and lower arousal ratings than did the P-C and P-UC groups. However, there were no differences between the three groups in terms of HF power. The relationship between cognitive coping strategy reflected by the N1 wave and subjective and cardiovascular responses will be discussed. (Japanese Journal of Physiological Psychology and Psychophysiology, 21 (3) : 205-216, 2003.)View full abstractDownload PDF (1494K) -
Akihisa HIROTA, Yukihiro SAWADA, Gohichi TANAKA, Yuichiro NAGANO, Izum ...2003 Volume 21 Issue 3 Pages 217-230
Published: December 31, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSThe present study investigated the applicability of normalized pulse volume (NPV) as a new index for psychophysiological detection of deception. Twenty eight healthy undergraduates (14 males, 14 females) were required to commit a mock crime. The subjects were each instructed to steal an envelope containing a piece of jewelry and to hide it. The subjects were then given the Guilty Knowledge Test concerning the hidden thing, during which NPV, peripheral skin blood flow, heart rate, skin conductance response, skin conductance level, systolic and diastolic blood pressure, and thoracic and abdominal respiration rates were recorded. The results indicated that NPV decreased much more in the critical than in the non-critical items during the first 15 seconds after the onset of the items. The decrement pattern of NPV was almost identical to that of peripheral blood flow. The present study strongly suggests that NPV is a sensitive and cost-effective index for an application in practical polygraph examinations. (Japanese Journal of Physiological Psychology and Psychophysiology, 21 (3) : 217-230, 2003.)View full abstractDownload PDF (2138K) -
Yasunari SASAKI, Tsuneo IWASAKI2003 Volume 21 Issue 3 Pages 231-238
Published: December 31, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSIn the present study, effects of the entorhinal and hippocampal lesions on delayed non-matching-to-place (DNMTP) performance in radial maze were examined to investigate the differential involvement of the entorhinal cortex and hippocampus in place guided working memory. Rats with lesions of the entorhinal cortex displayed significant delay-dependent impairments on DNMTP performance, whereas the performance of the hippocampal lesioned rats was severely impaired for all the delays examined. The results indicate that the entorhinal cortex is primarily involved in place guided working memory, and the hippocampus has involvement with reference memory in addition to place guided working memory. Therefore, these findings suggest that there is a functional dissociation between the entorhinal cortex and hippocampus.View full abstractDownload PDF (921K) -
Kiyoshi FUJIMOTO, Akihiro YAGI2003 Volume 21 Issue 3 Pages 239-244
Published: December 31, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSWe identified the pre-saccadic spike potential and post-saccadic lambda response related to the fast phase of optokinetic nystagmus (OKN). To induce horizontal OKN, 23 participants individually sat inside a rotating drum and viewed a whole-field grating pattern moving horizontally at a velocity of 24 or 60 deg/s. Electroencephalograms were recorded from an occipital electrode (Oz) and averaged by time-locking to either onset or offset of the fast phase. As a result, the positive spike potential, which peaked 5 ms after fast phase onset, was obtained clearly when that was the trigger point. The positive lambda response was obtained with both trigger points, and showed a peak about 90 ms after fast phase offset. The lambda response was attenuated and delayed with an increase of stimulus velocity that caused a large retinal slip to degrade clear vision. That suggested visual processing after rapid eye movement affected the lambda response of OKN, as well as the response of voluntary saccade. (Japanese Journal of Physiological Psychology and Psychophysiology, 21 (3) : 239-244, 2003.)View full abstractDownload PDF (853K) -
Nobuyoshi IWAKI, Makoto MIYATANI2003 Volume 21 Issue 3 Pages 245-252
Published: December 31, 2003
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSWe examined whether the peak latency of the NO-GO potential observed in a GO/NO-GO task is related to the time between the stimulus presentation and the decision to stop a response (NO-GO decision). Stimuli consisted of a central target letter and flanking compatible (HHHHH, SSSSS) or incompatible noise letters (SSHSS, HHSHH). In such a case, it is thought that all letters of the compatible NO-GO stimulus enhance the NO-GO decision, while in the incompatible stimulus noise information enhances the GO decision, resulting in a delay in the NO-GO decision. Therefore, if the NO-GO latency is related to the time required for a NO-GO decision, the latency should be longer for incompatible stimuli than for compatible ones. Fourteen right-handed subjects (18-27 years old) performed a visual GO/NO-GO task by pressing a button. As a result, the false-alarm percentage in incompatible NO-GO trials was greater than in compatible trials, showing the enhancement of the GO decision by adding noise. In addition, since the NO-GO latency was longer for incompatible stimuli, the above hypothesis was supported. (Japanese Journal of Physiological Psychology and Psychophysiology, 21 (3) : 245-252, 2003.)View full abstractDownload PDF (907K)
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