dc.contributor.author |
Broadway, James Michael |
en_US |
dc.date.accessioned |
2012-09-20T18:12:13Z |
|
dc.date.accessioned |
2015-07-13T10:56:43Z |
|
dc.date.available |
2012-09-20T18:12:13Z |
|
dc.date.available |
2015-07-13T10:56:43Z |
|
dc.date.issued |
2012-05-04 |
en_US |
dc.identifier.uri |
http://hdl.handle.net/1853/44708 |
|
dc.identifier.uri |
http://evidence.thinkportal.org/handle/1853/44708 |
|
dc.description.abstract |
Two event-related potential (ERP) experiments were conducted to investigate spatial-numeric associations of response codes (SNARC) and attentional cuing (SNAAC). In the SNARC effect, people respond faster when making a left-hand response to report that a number is small, and when making a right-hand response to report that a number is large. Experiment 1 examined effects of SNARC-compatibility and prior response-probability in a number comparison task. Lateralized readiness potentials (LRPs) showed that SNARC-compatibility influenced an intermediate stage of response-selection, and prior response-probability influenced both earlier and later stages. The P300 ERP component was also modulated by SNARC-compatibility and prior response-probability, suggesting parietal involvement in the SNARC effect. In the SNAAC effect, attention is directed to left-side regions of space upon viewing small-magnitude numbers, and to right-side regions of space upon viewing large-magnitude numbers. Experiment 2 investigated whether ERPs evoked by peripheral visual probes would be enhanced when probes appeared in the left hemifield after small-magnitude digits and when they appeared in the right hemifield after large-magnitude digits. ERPs to peripheral probes were not modulated by numerical magnitude of digit pre-cues. |
en_US |
dc.publisher |
Georgia Institute of Technology |
en_US |
dc.subject |
EEG |
en_US |
dc.subject |
SNARC effect |
en_US |
dc.subject |
Cuing |
en_US |
dc.subject.lcsh |
Number concept |
|
dc.title |
SNARC and SNAAC: spatial-numeric association of response codes and attentional cuing |
en_US |
dc.type |
Dissertation |
en_US |
dc.description.degree |
PhD |
en_US |
dc.contributor.department |
Psychology |
en_US |
dc.description.advisor |
Committee Chair: Corballis, Paul; Committee Member: Duarte, Audrey; Committee Member: Schumacher, Eric; Committee Member: Verhaeghen, Paul; Committee Member: Wheaton, Lewis |
en_US |