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„scenarios/scripts/p300-tactile-accumulator.lua“ ändern

master
Tobias Baumann 2 years ago
parent
commit
8ba5957791
1 changed files with 202 additions and 179 deletions
  1. 202
    179
      scenarios/scripts/p300-tactile-accumulator.lua

+ 202
- 179
scenarios/scripts/p300-tactile-accumulator.lua View File

function arrayMax(a)
if #a == 0 then return nil, nil end
local maxIdx, maxValue = 0, a[0]
for i = 1, (#a -1 ) do
if maxValue < a[i] then
maxIdx, maxValue = i, a[i]
end
end
return maxIdx, maxValue
end
List = {}
function List.new ()
return {first = 0, last = -1}
end
function List.pushright (list, value)
local last = list.last + 1
list.last = last
list[last] = value
end
function List.popleft (list)
local first = list.first
if first > list.last then
error("list is empty")
end
local value = list[first]
list[first] = nil -- to allow garbage collection
list.first = first + 1
return value
end
function List.isempty (list)
if list.first > list.last then
return true
else
return false
end
end
function initialize(box)
dofile(box:get_config("${Path_Data}") .. "/plugins/stimulation/lua-stimulator-stim-codes.lua")
row_base = _G[box:get_setting(2)]
n_tactilos = box:get_setting(3)
segment_start = _G[box:get_setting(4)]
segment_stop = _G[box:get_setting(5)]
-- 0 inactive, 1 segment started, 2 segment stopped (can vote)
segment_status = 0
-- the idea is to push the flash states to the fifo, and when predictions arrive (with some delay), they are matched in oldest-first fashion.
target_fifo = List.new()
-- box:log("Info", string.format("pop %d %d", id[1], id[2]))
row_votes = {}
do_debug = false
end
function uninitialize(box)
end
function process(box)
-- loops until box is stopped
while box:keep_processing() do
-- first, parse the timeline stream
for stimulation = 1, box:get_stimulation_count(2) do
-- gets the received stimulation
local identifier, date, duration = box:get_stimulation(2, 1)
-- discards it
box:remove_stimulation(2, 1)
if identifier == segment_start then
if do_debug then
box:log("Info", string.format("Trial start"))
box:log("Info", string.format("Clear votes"))
end
-- zero the votes
row_votes = {}
target_fifo = List.new()
-- fixme fixed 20
for i = 0,20 do
row_votes[i] = 0
end
segment_status = 1
end
-- Does the identifier code a flash? if so, put into fifo
if segment_status == 1 and identifier >= row_base and identifier <= OVTK_StimulationId_LabelEnd then
-- assume rows before cols
if identifier < (row_base + n_tactilos) then
local t = {"row", identifier - row_base}
List.pushright(target_fifo,t)
if do_debug then
box:log("Info", string.format("Push row target %d", identifier - row_base ))
end
end
end
if identifier == segment_stop then
if do_debug then
box:log("Info", string.format("Trial stop"))
end
segment_status = 2
end
end
-- then parse the classifications
for stimulation = 1, box:get_stimulation_count(1) do
-- gets the received stimulation
local identifier, date, duration = box:get_stimulation(1, 1)
-- discards it
box:remove_stimulation(1, 1)
-- Is it an in-class prediction?
if identifier == OVTK_StimulationId_Target then
local t = List.popleft(target_fifo)
if do_debug then
box:log("Info", string.format("Pred fifo %s %d is target", t[1], t[2]))
end
if t[1]=="row" then
row_votes[t[2]] = row_votes[t[2]] + 1
end
end
if identifier == OVTK_StimulationId_NonTarget then
local t = List.popleft(target_fifo)
if do_debug then
box:log("Info", string.format("Pred fifo %s %d is nontarget", t[1], t[2]))
end
end
end
if segment_status == 2 and List.isempty(target_fifo) then
-- output the vote after the segment end when we've matched all predictions
local maxRowIdx, maxRowValue = arrayMax(row_votes)
if maxRowValue == 0 then
box:log("Warning", string.format("Classifier predicted 'no p300' for all flashes of the trial"));
end
if do_debug then
local rowVotes = 0
for ir, val in pairs(row_votes) do
rowVotes = rowVotes + val
end
box:log("Info", string.format("Vote [%d] wt [%d]", maxRowIdx+row_base, maxRowValue))
end
local now = box:get_current_time()
box:send_stimulation(1, maxRowIdx + row_base, now, 0)
segment_status = 0
end
box:sleep()
end
end

function arrayMax(a)
if #a == 0 then return nil, nil end
local maxIdx, maxValue = 0, a[0]
for i = 1, (#a -1 ) do
if maxValue < a[i] then
maxIdx, maxValue = i, a[i]
end
end
return maxIdx, maxValue
end

-- For handling target fifo

List = {}
function List.new ()
return {first = 0, last = -1}
end

function List.pushright (list, value)
local last = list.last + 1
list.last = last
list[last] = value
end

function List.popleft (list)
local first = list.first
if first > list.last then
error("list is empty")
end
local value = list[first]
list[first] = nil -- to allow garbage collection
list.first = first + 1
return value
end

function List.isempty (list)
if list.first > list.last then
return true
else
return false
end
end

-- this function is called when the box is initialized
function initialize(box)

dofile(box:get_config("${Path_Data}") .. "/plugins/stimulation/lua-stimulator-stim-codes.lua")

row_base = _G[box:get_setting(2)]
n_tactilos = box:get_setting(3)
segment_start = _G[box:get_setting(4)]
segment_stop = _G[box:get_setting(5)]
col_base = row_base + n_tactilos

-- 0 inactive, 1 segment started, 2 segment stopped (can vote)
segment_status = 0

-- the idea is to push the flash states to the fifo, and when predictions arrive (with some delay), they are matched in oldest-first fashion.
target_fifo = List.new()
-- box:log("Info", string.format("pop %d %d", id[1], id[2]))
row_votes = {}
col_votes = {}
do_debug = false
end

-- this function is called when the box is uninitialized
function uninitialize(box)
end
function process(box)
-- loops until box is stopped
while box:keep_processing() do
-- first, parse the timeline stream
for stimulation = 1, box:get_stimulation_count(2) do
-- gets the received stimulation
local identifier, date, duration = box:get_stimulation(2, 1)
-- discards it
box:remove_stimulation(2, 1)

if identifier == segment_start then
if do_debug then
box:log("Info", string.format("Trial start"))
box:log("Info", string.format("Clear votes"))
end
-- zero the votes
col_votes = {}
row_votes = {}
target_fifo = List.new()
-- fixme fixed 20
for i = 0,20 do
col_votes[i] = 0
row_votes[i] = 0
end
segment_status = 1
end

-- Does the identifier code a flash? if so, put into fifo
if segment_status == 1 and identifier >= row_base and identifier <= OVTK_StimulationId_LabelEnd then
-- assume rows before cols
if identifier < col_base then
local t = {"row", identifier - row_base}
List.pushright(target_fifo,t)
if do_debug then
box:log("Info", string.format("Push row target %d", identifier - row_base ))
end
else
local t = {"col", identifier - col_base}
List.pushright(target_fifo,t)
if do_debug then
box:log("Info", string.format("Push col target %d", identifier - col_base ))
end
end
end

if identifier == segment_stop then
if do_debug then
box:log("Info", string.format("Trial stop"))
end
segment_status = 2
end

end
-- then parse the classifications
for stimulation = 1, box:get_stimulation_count(1) do

-- gets the received stimulation
local identifier, date, duration = box:get_stimulation(1, 1)
-- discards it
box:remove_stimulation(1, 1)

-- Is it an in-class prediction?
if identifier == OVTK_StimulationId_Target then
local t = List.popleft(target_fifo)
if do_debug then
box:log("Info", string.format("Pred fifo %s %d is target", t[1], t[2]))
end
if t[1]=="row" then
row_votes[t[2]] = row_votes[t[2]] + 1
else
col_votes[t[2]] = col_votes[t[2]] + 1
end
end
if identifier == OVTK_StimulationId_NonTarget then
local t = List.popleft(target_fifo)
if do_debug then
box:log("Info", string.format("Pred fifo %s %d is nontarget", t[1], t[2]))
end
end
end
if segment_status == 2 and List.isempty(target_fifo) then
-- output the vote after the segment end when we've matched all predictions
local maxRowIdx, maxRowValue = arrayMax(row_votes)
local maxColIdx, maxColValue = arrayMax(col_votes)

if maxRowValue == 0 and maxColValue == 0 then
box:log("Warning", string.format("Classifier predicted 'no p300' for all flashes of the trial"));
end
if do_debug then
local rowVotes = 0
local colVotes = 0
for ir, val in pairs(row_votes) do
rowVotes = rowVotes + val
end
for ir, val in pairs(col_votes) do
colVotes = colVotes + val
end
box:log("Info", string.format("Vote [%d %d] wt [%d,%d]", maxRowIdx+row_base, maxColIdx+col_base, maxRowValue, maxColValue))
box:log("Info", string.format(" Total [%d %d]", rowVotes, colVotes))
end

local now = box:get_current_time()
box:send_stimulation(1, maxRowIdx + row_base, now, 0)
-- box:send_stimulation(2, maxColIdx + col_base, now, 0)
segment_status = 0
end

box:sleep()
end
end


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