Sequence effects in a spatial cueing task: endogenous orienting is sensitive to orienting in the preceding trial

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Attention Studies

Background:

• Understanding endogenous orienting is crucial for explaining how individuals voluntarily direct attention.
• Previous research has explored trial-to-trial dependencies in attention, but the specific influence of prior trial characteristics remains debated.

Purpose of the Study:

• To investigate if endogenous orienting is affected by orienting processes from the immediately preceding trial.
• To examine the impact of previous cue direction, trial type (valid, invalid, neutral, catch), and target alternation on attentional mechanisms.

Main Methods:

• A spatial cueing paradigm was employed to measure reaction times and accuracy.
• Analysis focused on attentional costs and benefits, response slowing, and effects related to target position repetition and previous cue validity.

Main Results:

• Attentional costs and benefits were significantly larger following valid compared to invalid trials, indicating strategic adjustments.
• Catch trials led to overall response slowing but did not affect attentional costs or benefits, supporting a dissociation between spatial and temporal attention.
• In neutral trials, responses were slower to targets at previously cued locations, irrespective of preceding trial validity, suggesting long-term inhibition-of-return.

Conclusions:

• Endogenous orienting exhibits sensitivity to preceding trial events, influencing strategic attentional allocation.
• The findings support a dissociation between spatial and temporal attentional control mechanisms.
• Evidence suggests the occurrence of long-term inhibition-of-return in endogenous attention between successive trials.