The space near the hands, or peri-hand space is a critical multisensory-motor interface between people and the environment. Recent studies have shown that visual processing near the hands is altered compared with stimuli far from the hands. Some results suggest that the changes may be mediated by brain mechanisms involved in evaluating emotional stimuli. Here we show direct evidence for that proposal: we found that both the emotional Stroop effect and the Late Positive Potential (LPP) to unpleasant visual stimuli were enhanced near the hands compared to far from the hands. The results reveal enhanced processing of unpleasant stimuli in peri-hand space, which may facilitate the response to potentially dangerous stimuli.
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Lateral peri-hand bias affects the horizontal but not the vertical distribution of attention.
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Department of Psychology, Neuroscience, and Behaviour, McMaster University, Hamilton, Ontario, Canada.
It has been demonstrated that humans exhibit an attention bias towards the lower visual field (e.g., faster target detection for targets appearing below eye level).
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Department of Humanities and Social Sciences, Indian Institute of Technology RoorkeeRoom No. 513, Uttarakhand - 247 667, Roorkee, India.
The immediate space surrounding the hands has often been termed the peri-hand space (PHS), and is characterized by a smaller reaction time (RT), better detection, and enhanced accuracy for stimuli presented in this space, relative to those stimuli presented beyond this space. Such behavioral changes have been explained in terms of a biased allocation of cognitive resources such as perception, attention, and memory, for the efficient processing of information presented in the PHS. However, in two experiments, the current study shows that these cognitive biases seem to have an underlying temporal basis.
View Article and Find Full Text PDFTool use moves the peri-personal space from the hand to the tip of the tool.
Front Psychol
May 2023
Department of Psychology, Teikyo University, Hachioji-shi, Tokyo, Japan.
In this study, we used a visual target detection task to investigate three hypotheses about how the peri-personal space is extended after tool-use training: , and hypotheses. We compared the target detection performance before and after tool-use training. In both conditions, the participants held a hockey stick-like tool in their hands during the detection task.
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J Exp Psychol Hum Percept Perform
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Department of Psychology, Thompson Rivers University.
Visual processing is altered for stimuli located near the hands, in what is termed peri-hand space, but it is unclear whether peri-hand effects are stable across the lifespan. To investigate this, adults and 5- to 8-year-old children completed a naturalistic visual search task on a touchscreen monitor while wearing eye-tracking glasses. Upon recognizing a previously specified target image in a 12-image array, they released a pushbutton with their left index finger in order to reach out and touch the target.
View Article and Find Full Text PDFAn auditory hand-proximity effect: The auditory Simon effect is enhanced near the hands.
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CAS Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Beijing, 100101, China.
Visual processing near the hands is altered compared with stimuli far from the hands. Here, we aimed to test whether this alteration can be found in auditory processing. Participants were required to perform an auditory Simon task either with their hands close to the loudspeakers or far from the loudspeakers.
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