Abstract：
:Objects are said to automatically "afford" various actions depending upon the motor repertoire of the actor. Such affordances play a part in how we prepare to handle or manipulate tools and other objects. Evidence obtained through fMRI, EEG and TMS has proven that this is the case but, as yet, the temporal evolution of affordances has not been fully investigated. The aim here was to further explore the timing of evoked motor activity using visual stimuli tailored to drive the motor system. Therefore, we presented three kinds of stimuli in stereoscopic depth; whole hand grasp objects which afforded a power-grip, pinch-grip objects which afforded a thumb and forefinger precision-grip and an empty desk, affording no action. In order to vary functional motor priming while keeping visual stimulation identical, participants adopted one of two postures, with either the dominant or non-dominant hand forward. EEG data from 29 neurologically healthy subjects were analysed for the N1 evoked potential, observed in visual discrimination tasks, and for the N2 ERP component, previously shown to correlate with affordances (Proverbio, Adorni, & D'Aniello, 2011). We observed a link between ERPs, previously considered to reflect motor priming, and the positioning of the dominant hand. A significant interaction was detected in the left-hemisphere N2 between the participants' posture and the object category they viewed. These results indicate strong affordance-related activity around 300ms after stimulus presentation, particularly when the dominant hand can easily reach an object.
journal_name
Brain Cognjournal_title
Brain and cognitionauthors
Rowe PJ,Haenschel C,Kosilo M,Yarrow Kdoi
10.1016/j.bandc.2016.11.005subject
Has Abstractpub_date
2017-04-01 00:00:00pages
102-108eissn
0278-2626issn
1090-2147pii
S0278-2626(16)30342-6journal_volume
113pub_type
杂志文章abstract：:Several studies have reported shifts in perceptual asymmetry during the menstrual cycle, but the potential confounding effect of mood changes has been largely ignored. In this study, 24 female subjects completed four visual laterality tasks and a mood questionnaire at three phases of the cycle. Results indicate no ove...
journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1006/brcg.1997.0936
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pub_type： 杂志文章,meta分析,评审
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pub_type： 临床试验,杂志文章
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pub_type： 杂志文章
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1006/brcg.2000.1214
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pub_type： 杂志文章
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pub_type： 杂志文章
doi：10.1016/j.bandc.2007.05.006
更新日期：2008-02-01 00:00:00
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pub_type： 杂志文章
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pub_type： 社论
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journal_title：Brain and cognition
pub_type： 杂志文章
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journal_title：Brain and cognition
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pub_type： 杂志文章
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：
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pub_type： 杂志文章
doi：
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journal_title：Brain and cognition
pub_type： 杂志文章
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更新日期：1995-11-01 00:00:00
