The effect of attention on context dependent synesthetic experiences

Area of Science:

• Cognitive Neuroscience
• Psychology
• Sensory Perception

Background:

• Synesthesia involves experiencing one sense through another, like seeing colors for letters/numbers (grapheme-color synesthesia).
• Contextual cues can influence synesthetic experiences, but the role of attention is not fully understood.

Purpose of the Study:

• To investigate if attention mediates contextual effects on grapheme-color synesthetic experiences.
• To examine how attentional cues affect the perception of ambiguous graphemes ('0' vs. 'O') and their associated colors.

Main Methods:

• A single grapheme-color synesthete participant was studied.
• Ambiguous graphemes ('0'/'O') were presented in contexts favoring one interpretation.
• Attentional cues were used to direct focus to either the numerical or alphabetical context.

Main Results:

• Attentional cues biased the perceived synesthetic color of the grapheme '0'.
• The synesthetic color matched the context cued by attention, regardless of the grapheme's physical color.
• This demonstrates attention's role in resolving contextual ambiguity in synesthesia.

Conclusions:

• Attention plays a crucial role in mediating contextual influences on synesthetic perception.
• Attentional selection can override sensory input in shaping synesthetic experiences.
• Findings contribute to understanding the interplay between attention, context, and subjective experience in synesthesia.