diff --git a/smocore/include/chronoFrame.h b/smocore/include/chronoFrame.h
new file mode 100644
index 0000000..0e83154
--- /dev/null
+++ b/smocore/include/chronoFrame.h
@@ -0,0 +1,32 @@
+#ifndef _CHRONO_FRAME_H
+#define _CHRONO_FRAME_H
+
+#include <vector>
+#include <chronomenon.h>
+#include <mentalEntity.h>
+#include <user/stimFrame.h>
+
+namespace smo {
+
+class ChronoFrame
+:	public Chronomenon, public MentalEntity
+{
+public:
+	/**	FIXME:
+	 * May be better to use a std::map here, where the key is a kind of ID
+	 * assigned to the stimulus source.
+	 */
+	std::vector<stim_buff::StimFrame> stimuli;
+};
+
+class ChronoSeq
+:	public Chronomenon, public MentalEntity
+{
+public:
+	std::vector<std::pair<stim_buff::SimultaneityStamp, ChronoFrame>> frames;
+};
+
+} // namespace smo
+
+#endif // _CHRONO_FRAME_H
+
diff --git a/smocore/include/chronomenon.h b/smocore/include/chronomenon.h
index 5627f2d..5940d76 100644
--- a/smocore/include/chronomenon.h
+++ b/smocore/include/chronomenon.h
@@ -1,30 +1,12 @@
 #ifndef _CHRONOMENON_H
 #define _CHRONOMENON_H
 
-#include <vector>
-#include <qualeBundle.h>
-#include <mentalEntity.h>
+namespace smo {
 
 class Chronomenon
-: public MentalEntity
 {
-public:
-	class Timestamp
-	{
-		uintptr_t value;
-	};
-
-	class Duration
-	{
-		uintptr_t value;
-	};
-
-public:
-	Chronomenon extract(Timestamp start, Duration len);
-
-public:
-	std::vector<QualeBundle> qualia;
 };
 
-#endif
+} // namespace smo
 
+#endif // _CHRONOMENON_H