Relative importance of informational units and their role in long-term recall by closed-head-injured patients and control groups.

1992 ◽  
Vol 60 (5) ◽  
pp. 802-803 ◽  
Author(s):  
Eli Vakil ◽  
Nurit Arbell ◽  
Michal Gozlan ◽  
Dan Hoofien ◽  
Haya Blachstein
Keyword(s):  
Relative Importance ◽  
Control Groups ◽  
Head Injured ◽  
Closed Head ◽  
Injured Patients ◽  
And Control

A randomized trial of levamisole versus placebo as adjuvant therapy in malignant melanoma.

1991 ◽  
Vol 9 (5) ◽  
pp. 736-740 ◽  
Author(s):  
L E Spitler
Keyword(s):  
Malignant Melanoma ◽  
Adjuvant Therapy ◽  
Randomized Trial ◽  
Control Groups ◽  
Disease Free Interval ◽  
Significant Difference ◽  
Long Term Follow Up ◽  
And Control

We conducted a long-term follow-up (median, 10.5 years) of patients included in a randomized trial of levamisole versus placebo as surgical adjuvant therapy in 203 patients with malignant melanoma. Of the patients randomized, 104 received levamisole, and 99 received placebo. The results show that there is no difference between the treatment and control groups with regard to any of the three end points analyzed. These included disease-free interval, time to appearance of visceral metastasis, and survival. Moreover, there was no significant difference between the treatment and control groups after adjusting for age, sex, or stage of disease.

Local cerebral glucose abnormalities in mild closed head injured patients with cognitive impairments

1989 ◽  
Vol 10 (5) ◽  
pp. 335-344 ◽  
Author(s):  
MARK S. HUMAYUN ◽  
SHARON K. PRESTY ◽  
NORMAN D. LAFRANCE ◽  
HENRY H. HOLCOMB ◽  
HARRY LOATS ◽  
...  
Keyword(s):  
Cognitive Impairments ◽  
Head Injured ◽  
Closed Head ◽  
Injured Patients ◽  
Glucose Abnormalities

Memory Strategies for Closed-Head-Injured Patients.

2018 ◽  
pp. 117-144
Author(s):  
B.G. Deelman ◽  
I.J. Berg ◽  
M. Koning-Haanstra
Keyword(s):  
Memory Strategies ◽  
Head Injured ◽  
Closed Head ◽  
Injured Patients

scholarly journals EEG Based Classification of Long-Term Stress Using Psychological Labeling

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 1886 ◽  
Author(s):  
Sanay Muhammad Umar Saeed ◽  
Syed Muhammad Anwar ◽  
Humaira Khalid ◽  
Muhammad Majid ◽  
Ulas Bagci
Keyword(s):  
Objective Measure ◽  
Machine Learning Algorithms ◽  
Support Vector ◽  
Eeg Signal ◽  
Expert Evaluation ◽  
Clinical Practices ◽  
Control Groups ◽  
Alpha Asymmetry ◽  
And Control

Stress research is a rapidly emerging area in the field of electroencephalography (EEG) signal processing. The use of EEG as an objective measure for cost effective and personalized stress management becomes important in situations like the nonavailability of mental health facilities. In this study, long-term stress was classified with machine learning algorithms using resting state EEG signal recordings. The labeling for the stress and control groups was performed using two currently accepted clinical practices: (i) the perceived stress scale score and (ii) expert evaluation. The frequency domain features were extracted from five-channel EEG recordings in addition to the frontal and temporal alpha and beta asymmetries. The alpha asymmetry was computed from four channels and used as a feature. Feature selection was also performed to identify statistically significant features for both stress and control groups (via t-test). We found that support vector machine was best suited to classify long-term human stress when used with alpha asymmetry as a feature. It was observed that the expert evaluation-based labeling method had improved the classification accuracy by up to 85.20%. Based on these results, it is concluded that alpha asymmetry may be used as a potential bio-marker for stress classification, when labels are assigned using expert evaluation.

scholarly journals Comparative Evaluation of Infected and NoninfectedAmblyomma tristeTicks withRickettsia parkeri, the Agent of an Emerging Rickettsiosis in the New World

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
F. A. Nieri-Bastos ◽  
M. P. J. Szabó ◽  
R. C. Pacheco ◽  
J. F. Soares ◽  
H. S. Soares ◽  
...  
Keyword(s):  
Infected Group ◽  
Control Group ◽  
Control Groups ◽  
Rickettsia Parkeri ◽  
Amblyomma Triste ◽  
Vertebrate Hosts ◽  
Domestic Rabbits ◽  
And Control ◽  
Term Maintenance

The distribution ofRickettsia parkeriin South America has been associated withAmblyomma tristeticks. The present study evaluated under laboratory conditions two colonies ofA. triste: one started from engorged females that were naturally infected byR. parkeri(designated as infected group); the other started from noninfected females (designated as control group). Both colonies were reared in parallel for five consecutive generations. Tick-naïve domestic rabbits were used for feeding of each tick stage and generation.R. parkeriwas preserved by transstadial maintenance and transovarial transmission inA. tristeticks for five consecutive generations, because all tested larvae, nymphs, and adults from the infected group were shown by PCR to contain rickettsial DNA. All rabbits infested by larvae, nymphs, and adults from the infected group seroconverted, indicating that these tick stages were all vector competent forR. parkeri. Expressive differences in mortality rates were observed between engorged nymphs from the infected and control groups, as indicated by 65.9% and 92.4% molting success, respectively. Our results indicate thatA. tristecan act as a natural reservoir forR. parkeri. However, due to deleterious effect caused byR. parkerion engorged nymphs, amplifier vertebrate hosts might be necessary for natural long-term maintenance ofR. parkeriinA. triste.

scholarly journals Word-finding strategies in closed head injured adults

1988 ◽  
Vol 35 (1) ◽  
Author(s):  
Juleen Kleiman ◽  
Lesley Bucke
Keyword(s):  
Head Injury ◽  
Closed Head Injury ◽  
Differential Effectiveness ◽  
Language Deficit ◽  
Word Finding ◽  
Confrontation Naming ◽  
Wide Range ◽  
Head Injured ◽  
Closed Head ◽  
Injured Patients

Word-finding difficulties are a common and prominent language deficit following closed head injury. The word-finding difficulties of three closed head injured patients were investigated within the framework of compensatory strategies using Teicher's Taxonomy of Word-Finding Strategies (Teicher, 1986). The word-finding difficulties were evaluated during procedural discourse and two confrontation naming conditions. Each subject's communicative competence and language ability was determined. Results indicated that all subjects employed a wide range of strategies, particularly during confrontation naming, but with differential effectiveness. A relationship was noted between the strategy's effectiveness and the subject's pragmatic ability. The results are discussed in the light of the existing literature on head injury. The theoretical and clinical implications are considered.

Social interaction following severe closed head injury

1987 ◽  
Vol 17 (1) ◽  
pp. 67-78 ◽  
Author(s):  
L. Elsass ◽  
G. Kinsella
Keyword(s):  
Interpersonal Relationships ◽  
Behavioural Change ◽  
Self Report ◽  
Control Group ◽  
Severely Injured ◽  
Psychiatric Disturbance ◽  
Significant Difference ◽  
Head Injured ◽  
Closed Head

SynopsisThis paper describes research which sought to investigate and describe the interpersonal relationships and vulnerability to psychiatric disturbance in severely closed head injured subjects. The head injured subjects were severely injured, with mild or extremely severely injured individuals being excluded from this study. Self-report by the injured individual was compared with relatives' reports. Fifteen head injured people were individually matched with non-head injured people from the general population who acted as controls. Each subject nominated one ‘close other’ for comparative interview. The dependent variables included interpersonal relationships, non-psychotic psychiatric disturbance and behavioural change.The head injured group differed significantly from the control group in the quantity of interaction but not in the perceived quality of interaction. The groups differed significantly on behavioural change. No significant difference was found between responses given by the head injured and their ‘close other’ compared with the controls. Deficient quantity of interpersonal relationships and greater vulnerability to psychiatric disorders was shown in this sample. Further research on the assessment of long-term social outcome and psychiatric stability in the head injured could assist in the improved long-term rehabilitation of the survivors.

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