“…Granit, 1955). Repetitive synaptic activation of motoneurones has been studied by the monosynaptic reflex discharges generated thereby (Hagbarth & Naess, 1951;Eccles & Rall, 1951a;Jefferson & Schlapp, 1953; Alvord & Fuortes, 1953;Fuortes & Hubel, 1956;Evanson, 1956; Lloyd & Wilson, 1957;Lloyd, 1957a, b) and by the synaptic potentials recorded either extracellularly or after electrotonic spread to the ventral root (Eccles, 1946;Eccles & Rall, 1951a). In the present investigation repetitive synaptic activation has been studied in detail by intracellular recording from motoneurones.…”