Abstract
| Original language | English |
|---|---|
| Number of pages | 15 |
| Journal | Psychological Research |
| Early online date | 16 Feb 2019 |
| DOIs | |
| Publication status | E-pub ahead of print - 16 Feb 2019 |
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Keywords
- Perception-Action Model
- Dorsal stream
- Ventral stream
- Garner Interference
- Multitasking
- Grasping
Cite this
Grasping and perception are both affected by irrelevant information and secondary tasks : New evidence from the Garner paradigm. / Löhr-Limpens, Miriam (Corresponding Author); Göhringer, Frederic; Schenk, Thomas; Hesse, Constanze.
In: Psychological Research, 16.02.2019.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Grasping and perception are both affected by irrelevant information and secondary tasks
T2 - New evidence from the Garner paradigm
AU - Löhr-Limpens, Miriam
AU - Göhringer, Frederic
AU - Schenk, Thomas
AU - Hesse, Constanze
N1 - Funding: This work was supported by the DFG Priority Program SPP 1772 concerning multitasking “Human performance under multiple cognitive task requirements: From basic mechanisms to optimized task scheduling” (DFG/SCHE 735/2-1) awarded to Thomas Schenk. We would like to thank Laura Koroknai for her assistance with data collection.
PY - 2019/2/16
Y1 - 2019/2/16
N2 - In their Perception-Action Model (PAM), Goodale and Milner (1992) proposed functionally independent and encapsulated processing of visual information for action and perception. In this context, they postulated that visual input for action is processed in an automatized and analytic manner, which renders visuomotor behaviour immune to perceptual interferences or multitasking costs due to sharing of cognitive resources. Here, we investigate the well-known Garner Interference effect under dual- and single-task conditions in its classic perceptual form as well as in grasping. Garner Interference arises when stimuli are classified along a relevant dimension (e.g., their length), while another irrelevant dimension (e.g., their width) has to be ignored. In the present study, participants were presented with differently sized rectangular objects and either grasped them or classified them as long or short via button-presses. We found classical Garner Interference effects in perception as expressed in prolonged reaction times when variations occurred also in the irrelevant object dimension. While reaction times during grasping were not susceptible to Garner Interference, effects were observed in a number of measures that reflect grasping accuracy (i.e., poorer adjustment of grip aperture to object size, prolonged adjustment times, and increased variability of the maximum hand opening when irrelevant object dimensions were varied). In addition, multitasking costs occurred in both perception and action tasks. Thus, our findings challenge the assumption of automaticity in visuomotor behaviour as proposed by the PAM.
AB - In their Perception-Action Model (PAM), Goodale and Milner (1992) proposed functionally independent and encapsulated processing of visual information for action and perception. In this context, they postulated that visual input for action is processed in an automatized and analytic manner, which renders visuomotor behaviour immune to perceptual interferences or multitasking costs due to sharing of cognitive resources. Here, we investigate the well-known Garner Interference effect under dual- and single-task conditions in its classic perceptual form as well as in grasping. Garner Interference arises when stimuli are classified along a relevant dimension (e.g., their length), while another irrelevant dimension (e.g., their width) has to be ignored. In the present study, participants were presented with differently sized rectangular objects and either grasped them or classified them as long or short via button-presses. We found classical Garner Interference effects in perception as expressed in prolonged reaction times when variations occurred also in the irrelevant object dimension. While reaction times during grasping were not susceptible to Garner Interference, effects were observed in a number of measures that reflect grasping accuracy (i.e., poorer adjustment of grip aperture to object size, prolonged adjustment times, and increased variability of the maximum hand opening when irrelevant object dimensions were varied). In addition, multitasking costs occurred in both perception and action tasks. Thus, our findings challenge the assumption of automaticity in visuomotor behaviour as proposed by the PAM.
KW - Perception-Action Model
KW - Dorsal stream
KW - Ventral stream
KW - Garner Interference
KW - Multitasking
KW - Grasping
UR - http://www.mendeley.com/research/grasping-perception-both-affected-irrelevant-information-secondary-tasks-new-evidence-garner-paradig
U2 - 10.1007/s00426-019-01151-z
DO - 10.1007/s00426-019-01151-z
M3 - Article
JO - Psychological Research
JF - Psychological Research
SN - 0340-0727
ER -