diff --git a/ECTrainer2/ECTrainer.h b/ECTrainer2/ECTrainer.h
index b40426b..0e3db05 100644
--- a/ECTrainer2/ECTrainer.h
+++ b/ECTrainer2/ECTrainer.h
@@ -6,8 +6,8 @@
 
 //#define TOBII_ADDR "192.168.71.50"
 #define TOBII_ADDR "192.168.23.155"
-//#define EYEDEVICE_GLASS2
-#define EYEDEVICE_NONE
+#define EYEDEVICE_GLASS2
+//#define EYEDEVICE_NONE
 
 class BaseProcess;
 class ECTrainerGUI;
diff --git a/ECTrainer2/Worker.cpp b/ECTrainer2/Worker.cpp
index 74fd794..0ab37fe 100644
--- a/ECTrainer2/Worker.cpp
+++ b/ECTrainer2/Worker.cpp
@@ -12,7 +12,6 @@
 Worker::Worker(ECTrainer* pEct) : BaseProcess(pEct)
 	, _AppStatus(APP_STATUS::BOOT)
 	, _fpLogData(NULL)
-	, _fpLogEvent(NULL)
 	, _pExpTimer(NULL)
 	, _pContactTimer(NULL)
 	, _TargetImage()
@@ -27,8 +26,6 @@
 
 // �f�X�g���N�^
 Worker::~Worker() {
-	if (_fpLogData) fclose(_fpLogData);
-	if (_fpLogEvent) fclose(_fpLogEvent);
 	mwut::SafeDelete((void**)&_pExpTimer);
 	mwut::SafeDelete((void**)&_pContactTimer);
 	mwut::SafeDelete((void**)&_pNohitTimer);
@@ -43,10 +40,6 @@
 	_ftprintf(_fpLogData, _T("time,stimNo,stimTime,gazeVx,gazeVy,gazeIx,gazeIy,target,contact time,Feedback,RR,"
 		"H11,H12,H13,H21,H22,H23,H31,H32,H33\n"));
 
-	if (_tfopen_s(&_fpLogEvent, EVENT_LOG_FILE, _T("w")) != 0) {
-		_pEct->MsgBox(_T("Can't open event log file."), MB_ICONERROR);
-		return false;
-	}
 
 	_AppStatus = APP_STATUS::IDLE;
 
@@ -195,11 +188,12 @@
 
 	case (int)ECTMSG::EXP_START: // �����J�n
 		if (_AppStatus == APP_STATUS::IDLE) {
-			_AppStatus = APP_STATUS::STIM;
-			((BaseProcess*)_pEct->PStimulus())->PostMsg(ECTMSG::EXP_START);
+
 			this->EventLog(_T("Experiment Start"));
 			_pExpTimer->Reset();
 			this->ResetParams();
+			((BaseProcess*)_pEct->PStimulus())->PostMsg(ECTMSG::EXP_START);
+			_AppStatus = APP_STATUS::STIM;
 		}
 		break;
 
@@ -213,6 +207,7 @@
 
 	case (int)ECTMSG::EXP_END: // �����I��
 		if (_AppStatus == APP_STATUS::STIM) {
+			if (_fpLogData) fclose(_fpLogData);
 			_AppStatus = APP_STATUS::IDLE;
 			((BaseProcess*)_pEct->PStimulus())->PostMsg(ECTMSG::EXP_END);
 			this->EventLog(_T("Experiment Finished"));
@@ -282,8 +277,16 @@
 
 // �C�x���g���O�o��
 void Worker::EventLog(const TCHAR* msg) {
-	std::wstring datestr = mwut::Multi2Wide(mwut::DateTimeStr());
 
-	_ftprintf(_fpLogEvent, _T("%s %s\n"), datestr.c_str(), msg);
+	FILE* fp = NULL;		// �C�x���g���O�t�@�C���|�C���^
+	if (_tfopen_s(&fp, EVENT_LOG_FILE, _T("a")) != 0) {
+		_pEct->MsgBox(_T("Can't open event log file."), MB_ICONERROR);
+		return;
+	}
+
+	std::wstring datestr = mwut::Multi2Wide(mwut::DateTimeStr());
+	_ftprintf(fp, _T("%s %s\n"), datestr.c_str(), msg);
 	mwut::DebugPrintf(_T("%s %s\n"), datestr.c_str(), msg);
+
+	fclose(fp);
 }
diff --git a/ECTrainer2/Worker.h b/ECTrainer2/Worker.h
index 18ebef7..c92fe80 100644
--- a/ECTrainer2/Worker.h
+++ b/ECTrainer2/Worker.h
@@ -33,7 +33,6 @@
 	const int NOHIT_TIME = 100;		// �������O�ꂽ�Ɣ��肷�鎞�� msec
 	APP_STATUS _AppStatus;	// �A�v���P�[�V�������
 	FILE* _fpLogData;		// �f�[�^���O�t�@�C���|�C���^
-	FILE* _fpLogEvent;		// �C�x���g���O�t�@�C���|�C���^
 	mwut::HPTimer* _pExpTimer;	// �����o�ߎ���
 	mwut::HPTimer* _pContactTimer;	// �ڕW�R���^�N�g����
 	mwut::HPTimer* _pNohitTimer;	// �����O�ꎞ��