Inhibition Drives Early Feature-Based Attention: The visual system, which plays a crucial role in understanding things, is limited in its ability for high-order processing. As a result, participation in suitable behavioral responses to external stimuli is largely dependent on the effective selection of goal-relevant visual input. The goal-relevant visual input basically incorporates activation of task-relevant features that are used to describe feature-based attention. There are numerous feature-based attention studies that have been conducted and focus on explaining attention by measuring the difference in performance in a secondary task. The researches have been conducted because feature-based attention is a relatively slow process despite its role in higher-order processing. One of these studies is the research by Jeff Moher and his colleagues on how inhibition drives early feature-based attention.

Summary of the Article:

Together with his colleagues, Jeff Moher conducted a research on how inhibition drives early feature-based attention. The research was conducted on the basis that attention can transform processing of visual input based on task-relevant features as early as 100 ms after the stimulus presentation. (Moher et al., 2014, p.1). Given the limited capacity of the visual system in higher-order processing, this study seeks to examine the significance of engaging in suitable behavioral responses to external stimuli in light of the efficient selection of goal-relevant visual input. In addition, the researchers also focus on examining the role of inhibition in feature-based attention based on various factors, particularly recent experience.

The exact research question asked in the paper is what is the role of inhibition in early feature-based attention? This research question is interesting because current literature does not provide insights regarding the importance of higher-level cognitive processes in early feature-based effects. Since previous studies have shown that feature-based attentional effects can take place without direct competition, they have suggested that activation does not necessarily play any role in feature-based attention. However, these studies do not provide accurate conclusions since attention has primarily been evaluated as the difference in...

Therefore, it is important to examine the role of inhibition in early feature-based attention, especially when there is strong direct competition.
In attempts to determine the answer to this research question, the authors used different experiments that were geared towards determining whether feature-based inhibition influences selection early in visual processing. The purpose of the experiment was to determine the effect of feature-based inhibition on selection in early visual processing because of how it has recently been proven that inhibition is crucial in feature-based attention. The authors commenced their analysis by recognizing that the visual system is limited in its ability for higher-order processing, which necessitates involvement in suitable behavioral responses to external stimuli. While this involvement is dependent on the efficient selection of goal-relevant visual input, the selection process can take place based on various stimulus properties like location and color. Moreover, these authors acknowledge the findings of recent study that show that early processing of task-relevant features across the whole visual field can be influenced by existing behaviors as early as roughly 100 ms after stimulus presentation (Moher et al., 2014, p.1). However, it is unknown whether feature-based selectivity functions through activation of task-relevant features or through inhibiting competing distractor features. The experiments are fueled by the lack of evidence on whether feature-based inhibition can influence early stages of visual processing.

The authors conducted three experiments using different research designs and procedures to examine a constant stream of two spatially interleaved series of dots in a single visual hemifield while sustaining core fixation. In each of the three experiments, every set of probe dots were randomly selected to incorporate the target color, the distractor color, and the neutral color. In the first experiment, sets of small dots were provided in both hemifields on a black background and randomly positioned within an imaginary circle. The participants in this trial completed at least six sets of trials, which consisted of 16 trials. The experimenters then provided feedback between sets on task performance and eye and body…