Keeping focused: sustained spatial selective visual attention is maintained in healthy old age.

Area of Science:

• Cognitive Neuroscience
• Human Aging Research
• Visual Perception

Background:

• Cognitive decline with age may involve increased interference from irrelevant information.
• It remains unclear if later-stage cognitive deficits stem from earlier sensory processing issues.
• Understanding attentional modulation of perception is key to explaining age-related cognitive changes.

Purpose of the Study:

• To investigate how aging affects attentional control of sensory selection.
• To determine if older adults can sustain spatial selective attention similarly to younger adults.
• To examine the neural basis of attentional modulation in early visual processing across age groups.

Main Methods:

• Compared younger and older adults' ability to sustain spatial attention.
• Utilized rapid serial visual presentation (RSVP) of overlapping large and small letter sequences.
• Measured steady-state visual evoked potentials (SSVEPs) to index early visual processing and attentional modulation.

Main Results:

• Detection performance was comparable between younger and older adults.
• Attentional modulation of SSVEPs was observed in both age groups.
• No significant age-related differences were found in the magnitude or cortical sources of SSVEP attention effects.

Conclusions:

• Voluntary spatial attention effectively modulates sustained sensory processing in early visual areas in healthy older adults.
• Early-stage sensory processing and attentional control appear to be preserved in healthy aging.
• The findings suggest that age-related cognitive interference may not originate from a general failure of early attentional selection.