Performance on double-alternation problems by normal and brain-injured monkeys.

R. W. Leary; H. F. Harlow; P. H. Settlage; D. D. Greenwood

doi:10.1037/h0059968

Performance on double-alternation problems by normal and brain-injured monkeys.

Journal of Comparative and Physiological Psychology ◽

10.1037/h0059968 ◽

1952 ◽

Vol 45 (6) ◽

pp. 576-584 ◽

Cited By ~ 11

Author(s):

R. W. Leary ◽

H. F. Harlow ◽

P. H. Settlage ◽

D. D. Greenwood

Keyword(s):

Double Alternation ◽

Brain Injured

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Specific Computerized Attention Training in Stroke and Traumatic Brain-Injured Patients

Zeitschrift für Neuropsychologie ◽

10.1024/1016-264x.14.4.283 ◽

2003 ◽

Vol 14 (4) ◽

pp. 283-292 ◽

Cited By ~ 18

Author(s):

W. Sturm ◽

B. Fimm ◽

A. Cantagallo ◽

N. Cremel ◽

P. North ◽

...

Keyword(s):

Divided Attention ◽

Single Case ◽

Baseline Period ◽

Specific Training ◽

Attention Task ◽

Baseline Phase ◽

Computerized Training ◽

Brain Injured ◽

Divided Attention Task ◽

Injured Patients

Abstract: In a multicenter European approach, the efficacy of the AIXTENT computerized training programs for intensity aspects (alertness and vigilance) and selectivity aspects (selective and divided attention) of attention was studied in 33 patients with brain damage of vascular and traumatic etiology. Each patient received training in one of two most impaired of the four attention domains. Control tests were performed by means of a standardized computerized attention test battery (TAP) comprising tests for the four attention functions. Assessment was carried out at the beginning and at the end of a four week baseline period and after the training period of 14 one-hour sessions. At the end of the baseline phase, there was only slight but significant improvement for the most complex attention function, divided attention (number of omissions). After the training, there were significant specific training effects for both intensity aspects (alertness and vigilance) and also for the number of omissions in the divided attention task. The application of inferential single case procedures revealed a high number of significant improvements in individual cases after specific training of alertness and vigilance problems. On the other hand, a non specific training addressing selectivity aspects of attention lead either to improvement or deterioration of alertness and vigilance performance. The results corroborate the findings of former studies with the same training instrument but in patients with different lesion etiologies.

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Heart Rate Variability, Homeostasis, and Brain Function

Journal of Psychophysiology ◽

10.1027/0269-8803/a000080 ◽

2012 ◽

Vol 26 (4) ◽

pp. 178-203 ◽

Cited By ~ 31

Author(s):

Francesco Riganello ◽

Sergio Garbarino ◽

Walter G. Sannita

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Vegetative State ◽

Communication Disorders ◽

Affective States ◽

Experimental Conditions ◽

Cardiovascular Research ◽

Sensory Stimuli ◽

Additional Information ◽

Brain Injured

Measures of heart rate variability (HRV) are major indices of the sympathovagal balance in cardiovascular research. These measures are thought to reflect complex patterns of brain activation as well and HRV is now emerging as a descriptor thought to provide information on the nervous system organization of homeostatic responses in accordance with the situational requirements. Current models of integration equate HRV to the affective states as parallel outputs of the central autonomic network, with HRV reflecting its organization of affective, physiological, “cognitive,” and behavioral elements into a homeostatic response. Clinical application is in the study of patients with psychiatric disorders, traumatic brain injury, impaired emotion-specific processing, personality, and communication disorders. HRV responses to highly emotional sensory inputs have been identified in subjects in vegetative state and in healthy or brain injured subjects processing complex sensory stimuli. In this respect, HRV measurements can provide additional information on the brain functional setup in the severely brain damaged and would provide researchers with a suitable approach in the absence of conscious behavior or whenever complex experimental conditions and data collection are impracticable, as it is the case, for example, in intensive care units.

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