The dynamic developmental theory of ADHD [ 8, 9, 20] explains intra-individual behavioural variability as deficient acquisition of stimulus control of long chains of behaviour.
Effects of PCB 153 exposure were subsequently assessed by reinforcer-controlled lever pressing representing operationalizations of deficient sustained attention (stimulus control), hyperactivity (lever presses with IRTs > 0.67 s), and impulsivity (responses with IRTs < 0.67 s).
Neuropsychological assessment confirmed multiple-domain impairment with relative sparing of language, consisting of severe impairment of attention, visual perception, and verbal fluency by phonetic or semantic stimuli, deficient short-term verbal and visuo-spatial memory, and constructive apraxia.
The notion of differences in rate of processing of incoming auditory information derives from the SLI literature, where it has been hypothesized that ability to rapidly process incoming auditory stimuli is deficient in people affected by a language or literacy disorder [39].
While exposure of Apoe −/− macrophages to oxLDL sharply reduced their migration towards the chemotactic stimulus, Rcan1-deficient macrophages were not affected (Fig 8A B).
Formerly iron deficient adult rats showed enhanced stimulus-response learning in the context of competing spatial/distal cue information, a finding suggestive of reduced hippocampal functional influence.
To delineate the response of Caveolin-1 deficient hepatocytes to TGF- β stimuli, a caspase 3 assay was applied.
The twitch responses of nNOS-deficient muscles to a single threshold stimulus are shown in Table 1.
Raf-1 has also been reported protect cells from external apoptotic stimuli, including Fas ligation (43), a stimulus to which CAML-deficient thymocytes are extremely sensitive.
It is vital for human body functions like heart protection, regulation of blood pressure, protein dissolution, muscle contraction, nerve stimulus etc. Potassium is deficient in rare but may led to depression, muscle weakness, heart rhythm disorder etc.
The latter grouping, referred to here as "high light stimuli," is intended to capture the range of stimuli where even a vitamin A deficient population would be expected to respond [ 7].
