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Ensemble accumulator modeling of speed-accuracy tradeoff in visual search

Award Number: F32EY025538
ORGANIZATION: NATIONAL EYE INSTITUTE
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: FELLOWSHIP/SCHOLARSHIP/STUDENT LOANS
PERIOD OF PERFORMANCE START DATE: 12/01/2015
PERIOD OF PERFORMANCE END DATE: 11/30/2018

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Ensemble accumulator modeling of speed-accuracy tradeoff in visual search - ¿ DESCRIPTION (provided by applicant): The goal of this proposal is to carry out research training to develop new expertise in cognitive modeling that is inspired and constrained by neurophysiology. My previous work in human group decision making, and the sponsors' recent formulation of a novel modeling framework to explore neural ensemble decision making, yields an excellent opportunity for new training and interdisciplinary collaboration. Aim 1 will systematically investigate the relationship between neurons, instantiated as evidence accumulators, and the collective behavior of ensembles of neural accumulators in decision choice tasks; predicted choice behavior and dynamics of ensembles will be compared to observed saccade choice behavior and measured neural dynamics of awake behaving monkeys. Aim 2 will significantly extend this work by exploring alternative computational mechanisms for aggregation across accumulators in an ensemble, with hypotheses for alternative aggregation schemes drawn from other domains of group decision making. Training potential is high because the work will develop new computational models of decisions made by ensembles of neurons, an area of research in which I have no prior experience, but which offers exciting new directions for linking to my prior work on the Wisdom of Crowds. Forging novel connections between my new postdoctoral work and my previous PhD work will form a basis for my future research as an independent investigator. The findings have potential wide interest and applicability, as it may shed insight into how ensembles of neurons collectively make decisions in the brain.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2021 ( Subtotal = -$10,208 )
2021	2018	VANDERBILT UNIVERSITY, THE	2301 VANDERBILT PL	NASHVILLE	TN	37235	DAVIDSON	USA	Vision Research	000	3	12/29/2020	NON-COMPETING CONTINUATION	-$10,208
														Subtotal = -$10,208

Issue Date FY: 2018 ( Subtotal = $61,174 )
2018	2018	VANDERBILT UNIVERSITY, THE	2301 VANDERBILT PL	NASHVILLE	TN	37235	DAVIDSON	USA	Vision Research	001	3	6/18/2018	NON-COMPETING CONTINUATION	$2,008
2018	2018	VANDERBILT UNIVERSITY, THE	211 KIRKLAND HALL	NASHVILLE	TN	37240	DAVIDSON	USA	Vision Research	000	3	11/20/2017	NON-COMPETING CONTINUATION	$59,166
														Subtotal = $61,174

Issue Date FY: 2017 ( Subtotal = $57,066 )
2017	2017	VANDERBILT UNIVERSITY, THE	211 KIRKLAND HALL	NASHVILLE	TN	37240	DAVIDSON	USA	Vision Research	000	2	12/7/2016	NON-COMPETING CONTINUATION	$57,066
														Subtotal = $57,066

Issue Date FY: 2016 ( Subtotal = $54,294 )
2016	2016	VANDERBILT UNIVERSITY HOSPITAL, CHILDREN'S REHAB UNIT	1161 21ST AVENUE SOUTH	NASHVILLE	TN	37232	DAVIDSON	USA	Vision Research	002	1	3/21/2016	NEW	$1,888
2016	2016	VANDERBILT UNIVERSITY HOSPITAL, CHILDREN'S REHAB UNIT	1161 21ST AVENUE SOUTH	NASHVILLE	TN	37232	DAVIDSON	USA	Vision Research	000	1	11/25/2015	NEW	$52,406
2016	2016	VANDERBILT UNIVERSITY HOSPITAL, CHILDREN'S REHAB UNIT	1161 21ST AVENUE SOUTH	NASHVILLE	TN	37232	DAVIDSON	USA	Vision Research	001	1	11/25/2015	NEW	$0
														Subtotal = $54,294

Grand Total All Awards = $162,326

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Ensemble accumulator modeling of speed-accuracy tradeoff in visual search

Award Number: F32EY025538

ORGANIZATION: NATIONAL EYE INSTITUTE

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: FELLOWSHIP/SCHOLARSHIP/STUDENT LOANS

PERIOD OF PERFORMANCE START DATE: 12/01/2015

PERIOD OF PERFORMANCE END DATE: 11/30/2018

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