Even prolonged eye contact seems to have an effect.
1	Even	even	ADV	RB	_	5	advmod	5:advmod	Discourse=elaboration-additional:86->85:0
2	prolonged	prolonged	ADJ	JJ	Degree=Pos	4	amod	4:amod	Entity=(82-abstract-new-cf1-3-sgl
3	eye	eye	NOUN	NN	Number=Sing	4	compound	4:compound	Entity=(83-object-new-cf3-1-sgl)
4	contact	contact	NOUN	NN	Number=Sing	5	nsubj	5:nsubj|7:nsubj:xsubj	Entity=82)
5	seems	seem	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
6	to	to	PART	TO	_	7	mark	7:mark	_
7	have	have	VERB	VB	VerbForm=Inf	5	xcomp	5:xcomp	_
8	an	a	DET	DT	Definite=Ind|PronType=Art	9	det	9:det	Entity=(84-abstract-new-cf2-2-sgl
9	effect	effect	NOUN	NN	Number=Sing	7	obj	7:obj	Entity=84)|SpaceAfter=No
10	.	.	PUNCT	.	_	5	punct	5:punct	_
