“…Speaking (Karson, Staub, Kleinman, & Wyatt, 1981;von Cramon & Schuri, 1980), memorizing (De Jong & Merckelbach, 1990), and mental arithmetic (Telford & Thompson, 1933) increase the rate of blinking relative to quiet rest. Reading (Karson et al, 1981;Telford & Thompson, 1933), daydreaming (Holland & Tarlow, 1975), and tasks requiring focused visual attention (e.g., tracking; De Jong & Merckelbach, 1990;Tada, 1978) typically reduce the rate of spontaneous blinking. Cognitive processes believed to be responsible for this modulation of the rate of spontaneous blinking in adult humans include concentration or effort (Wood & Bitterman, 1950), cognitive load (De Jong & Merckelbach, 1990), attentional requirements (Stern et al, 1984), memory load (Telford & Thompson, 1933), and competition with visual processing (Holland & Tarlow, 1975).…”