A measurement model of cortisol reactivity of healthy older adults

Article Abstract:

Salivary cortisol levels are a sensitive measure of stress in healthy older adults. A study conducted on older adults reveals that cortisol reactivity is situation dependent, indicating that a congeneric measurement is more efficient for analyzing cortisol reactivity than a homogeneous reliability model. Cortisol response in older adults depends upon stimulus intensity. The responses in subjects are consistent during different experimental conditions but the response pattern varies over a period of time.

Measurement, Hydrocortisone

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The locus of age-related movement slowing: sensory processing in continuous goal-directed aiming

Article Abstract:

The locus of age-related slowing in the performance of a continuous aiming movement is related to feedforward and on-line sensory processes. The capacity of elderly people to utilize feedforward and on-line processes during a task is low as compared to young adults. The adjustment and reversal times in the elderly during a task involving reciprocal tapping with the right and left hands are higher. The delay in movement times in the older people is due to a higher dependence on slower feedback processes.

Research, Ability, Influence of age on, Movement, Psychology of, Movement (Psychology)

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Optical flow, spatial orientation, and the control of posture in the elderly

Article Abstract:

An investigation of the effect of the three standard conditions of optical flow on the perceptual motor activity of the aged, through stability graphic and computer simulation techniques, reveals a decrease in stability with age. The radio flow optical condition and the lamellar condition do not vary with age, and older subjects exhibit better movement for all the motion variables.

Analysis, Posture, Vision

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