Relationshiop of attentional, MRI, and electrophysiological parameters to duration estimation

Proposal details

Title: Relationshiop of attentional, MRI, and electrophysiological parameters to duration estimation
Research Area(s): ADHD and Allied Conditions
Background: Behavioural timing is an important element underlying the control of attention and also executive function. There is a need for studies examining the relationship between time estimation ability and attention/executive functions. Brain structure (MRI) and function (electrophysiological response)underlying the these temporal dynamics also needs to be delineated.
Aims: 1) Time estimation performance will be strongly associated with attentional capacity. 2) Age associated decrements in timing ability will be evident across the lifespan. 3) In ADD, there will evidence of response biases in time estimation with a tendency to underestimate time durations. This bias will be associated with attention impairments. 4) We anticipate a strong relationship between orbital and mesial frontal activation on EEG and brain volumes in these areas and timing performance. This will vary as a function of group: 1) Old vs young; 2) ADD vs. Healthy
Method: This study will involve examination of data from the BRID, specifically data from the time estimation task, in relationship to other attention measures. There will be a need for additional analyses of the raw timing data. Consequently we are requesting that the raw data be sent for each trial of the task so that we can calculate the timing parameters. The methods will involve regression methods to examine the relationship of the timing data with attention, EEG, and volumetric data .