Spontaneous alternation in normal and brain-damaged gerbils

Spontaneous Alternation Behavior in Human Neutrophils

retrieving from visual memory in schizophernics right hemisphere brain damaged and normal group

short-term visual retrieving processes were investigated in three groups, of schizophernics (n=10), right hemisphere brain damaged (n=10) and a normal grou (n=10) . all of subjects were men and right handed. the study utilized wais (verbal subtests), meaningless syllabuses, retrieve and recall tests and non-verbal patternes retrieve and recall tests. data were analyzed by three factor repeated ...

Severity and Co-occurrence of Oral and Verbal Apraxias in Left Brain Damaged Adults

Objective: Oral and verbal apraxias represent motor programming deficits of nonverbal and verbal movements respectively. Studying their properties may shed light on speech motor control processes. This study was focused on identifying cases with oral or verbal apraxia, their co–occurrences and severities. Materials & Methods: In this non-experimental study, 55 left adult subjects with left b...

Patterns of spontaneous recovery of neglect and associated disorders in acute right brain-damaged patients.

OBJECTIVES The evolutionary pattern of spontaneous recovery from acute neglect was studied by assessing cognitive deficits and motor impairments. Detailed lesion reconstruction was also performed to correlate the presence of and recovery from neglect to neural substrates. METHODS A consecutive series of right brain-damaged (RBD) patients with and without neglect underwent weekly tests in the ...

Effect of Deprivation on Delayed Response and Delayed Alternation Performance by Normal and Brain Operated Monkeys

3 monkeys impaired on delayed response and delayed alternation after midlateral frontal lesions, 3 monkeys unimpaired on these tasks after control lesions, and 3 unoperated monkeys were tested on spatial delayed response (with direct baiting) and spatial delayed alternation following 2, 26, and 50 hr. of food deprivation. Increased deprivation improved delayed response performance by all groups...