(v. t.) To act or perform to excess; to exaggerate in acting; as, he overacted his part.
(v. t.) To act upon, or influence, unduly.
(v. i.) To act more than is necessary; to go to excess in action.
Example Sentences:
(1) IDDM patients with incipient and overt nephropathy have been found to exhibit an overactivity of RBC sodium-lithium countertransport.
(2) Furthermore, when levels of the ocytocinase effect on the serum was studied in 10 cases before and after transfusing the ethanol, the results showed that there was little likelihood that overactivity of ocytocinase could explain the lowering in the levels of oxytocins brought about by the use of ethanol.
(3) As well as a dramatic improvement in bone mineralisation, there was remodeling of trabecular architecture and a decrease in fibrosis in patients with initial parathyroid overactivity.
(4) Epileptic boys were significantly more inattentive and overactive than nonepileptic boys according to their teachers and parents, and they performed significantly less well on tests of sustained attention and perceptual accuracy.
(5) The VBM deficit is a failure to decode the target stimulus, and is not simply a function of abnormalities due to an overactive transient channel system.
(6) Nevertheless, the ability to secrete this hormone is not a property of normal intact pars intermedia, but it manifests in the transplantations probably due to the overactivity of light cells induced by chronic stoppage of dopaminergic inhibition.
(7) It is thought that oral contraceptives cause generalized vascular overactivity.
(8) It is implicit that overactivity or functional failure of any one or combination of the integral reflexes may cause a significant disorder of lower urinary tract function.
(9) Hyperkinesis refers to a combination of traits that typically include: overactivity; restlessness; short attention span; distractability; low frustration tolerance; impulsiveness.
(10) Based on these results, it appears that the silicone expander technique is useful in patients with superior oblique overaction and Brown syndrome secondary to tight superior oblique tendon.
(11) Children who improved and those with persistent problems were initially rated high on overactivity, concentration difficulties and disobedience.
(12) A group of patients with cardiac myxoma who have a heritable syndrome involving skin myxomas, endocrine tumors, and lentiginosis--the complex of myxomas, spotty pigmentation, and endocrine overactivity--has been described previously.
(13) Overactivity of the thyroid gland was suspected in a patient receiving up to 100 mcg dose of eltroxin who tried to lose weight according to this method.
(14) Aldosterone overactivity is crucially involved in maintaining the oedematous state as evidenced by its often complete correction by adrenalectomy, or by aldosterone antagonists, in both experimental and clinical heart failure.
(15) The chronic stage (greater than 3 months postinjury, as in this patient) is usually characterized by sympathetic overactivity.
(16) Fluid retention, inappropriate stimulation of the renin-angiotensin system, sympathetic overactivity and changes of vessel wall structure have been shown to be important factors in its pathogenesis.
(17) Despite the presence of manifestations of sympathetic overactivity or hypermetabolism, the patients did not have true hyperthyroidism, as verified by the laboratory findings and the results of antithyroid treatment.
(18) Overactivity of the sympathetic nervous system and immunologic dysfunction have been shown to contribute to development and maintenance of hypertension in the Okamoto spontaneously hypertensive rat (SHR).
(19) These results indicate that cirrhotic patients with blunted renal response to atrial natriuretic peptide are characterized by low arterial pressure, marked overactivity of the renin-aldosterone system, and severe sodium and water retention.
(20) In some of these patients reduced bone density and even frank osteitis fibrosa suggest osteoclastic overactivity.
Underact
Definition:
(v. t.) To perform inefficiently, as a play; to act feebly.
Example Sentences:
(1) The changes discovered were evidently the result of functional underactivity of the skeletal muscles under conditions of weightlessness.
(2) Urodynamically 9 patients had underactive detrusor function, 2 had infravesical obstruction and 3 had both underactive detrusor function and infravesical obstruction.
(3) Most commonly noted prodromal symptoms were disturbed sleep and slowness and underactivity.
(4) There was no differentiation between overactive bladder-overactive sphincter and underactive bladder-overactive sphincter.
(5) Postoperative underaction of the myectomized muscle was not observed in any of our patients.
(6) This was due in all cases to underaction of the superior oblique muscle and probably to backward displacement of the trochlea which may be avoided by careful surgical re-attachment.
(7) Criticism was associated with other patient characteristics, including aggressive and attention-seeking behaviour, underactivity, and limited social interaction.
(8) Lessons have been learned from disorders that cause either sympathetic underactivity or overactivity.
(9) Methionine adenosyltransferase has been reported to be underactive in depression and schizophrenia and overactive in mania.
(10) In 3 patients the underactive lateral rectus was completely fibrotic; in 1 patient there was 80% fibrosis, and the rest of the muscle showed different stages of degeneration.
(11) This relative over- or underactivity of the cholinergic system could result from altered synthesis, storage, release, degradation, or reuptake or from a variety of receptor interactions.
(12) The data are interpreted as suggesting that tardive dyskinesia is mediated by underactivity of the pathways from the subthalamic nucleus to the medial pallidal segment and the substantia pars nigra pars reticulata, which in turn result in a loss of gamma-aminobutyric acid-ergic inhibition of the VA and VL thalamic nuclei.
(13) Urodynamic testing had demonstrated underactive detrusor function in all.
(14) This finding suggests underactivity of the cholinergic pathway from the pedunculopontine nucleus of the medial pallidal segment.
(15) Inferior oblique underaction was present in 12 of 16 eyes (75%) in the early postoperative period; however, elevation in adduction improved over time.
(16) The reason why these 2 patients had an underactive detrusor is unclear.
(17) Prorenin underactivity may facilitate renin-mediated ischemic vascular injury.
(18) The hypotheses of relative cholinergic underactivity in Huntington's disease, tardive dyskinesia, mania, and schizophrenia were pharmacologically investigated, using physostigmine and choline chloride.
(19) Only one patient demonstrated postoperative underaction of the recessed inferior oblique.
(20) Superior oblique underaction in acquired superior oblique palsy results from a neural deficit.